Directorate of Research (Agriculture)

Salient research Achievements, 2021-22

Rice

·High yielding black rice genotypes developed at RARS, AAU, Titabar having intermediate amylase content, high HRR percentage, low GI, High in antioxidant and other nutrients were tested at farmers’ field in Merapani and Titabar.

· RARS, AAU, Titabar contributed 6 advance breeding line viz., TTB 1048-60-9, TTB 1040-218-2-2, IR 87144-CR4-2-1-1-TTB-1-2, TTB 1058-408, TTB 1384 and TTB 1209-4-1into AICRIP trials for the year 2021-22.

· High yielding varieties viz., Dholi, Haccha, Langpi, Diyung, and Surma Dhan were recommended by the SVRC, Assam during 2021.

· Direct seeded rice variety ‘Dehangi’ registered under PPVFRA with registration No. REG/2018/319

· Altogether ninety six (96) DWR germplasm has been genotyped (sequenced) and data were submitted to National Centre for Biotechnological Information (NCBI), USA and will be

conserved and maintained at the station for future biological assets of the state/country.

· Application of Azospirillum and PSB @ 4 kg/ ha + RP @ 10 kg/ ha + RD of K) along with urea based on Leaf Colour Chart 4 (LCC 4) increased the yield of paddy.

· Consortia of potash solubilizing bacteria PSB @3.5kg with NPK@60:20:20(kg/ha) for transplanted Sali rice can reduce the K fertilizer requirement by 20kg/ha

· Azospirillum based microbial consortia was developed maintaining a concentration of 8.20 log cfu/ mL during the storage period 210 days after inoculation.

· Azotobacter based microbial consortia was developed and maintained with values >8.00 log cfu mL-1 after 210 days of storage.

· Field trial of nutrient management in rice-rajmah cropping sequence revealed highest yield of rajmah at 75% RDF with Rhizobium & PSB biofertilizers.

· Field trial on boron fertilization @ 0.25% B as Foliar Spray in PI & milk stage on rice resulted the highest yield of rice

· Significant increase in early seed vigour was observed on hydro-primed (30h @ 25OC) seed coating with Trichoderma harzianum in rice variety Luit.

· Treatments of Dry Bulk ZnO4 @ 500 ppm and Nano SiO2 @500ppm exhibited higher yield increase over control in direct seeded rice varieties.

· Application of Pseudomonas fluorescens (2x108cfu/g) @10 kg/ha at sowing was the best in reducing FNP (soil:21.54%, root:27.63%) in rice against Meloidogyne graminicola

· Nursery treatment either with Pseudomonus flourescens or Bacillus subtilis@ 10 kg/ha significantly increases seedling height of rice (16 & 14%), and reduces nematode galls in seedlings (44 & 38%), nematode population in soil (41 & 37%) and root (28 & 17%) and increase in crop yield (27 & 24%)

· Application of flubendiamide 39.35% SC or Pongamia oil @ 5ml/l was found most effective in controlling rice stem borer and leaf folder.

· BIPM package and farmer’s practice (Chemical control) were at par in respect of the population build-up of rice stem borer and leaf folder in rice.

· Seed treatment with organic Trichojal@5ml/kg seed/lit exhibited 93.75% yield increase over control in Keteki Joha.

Maize

· The QPM line K-20-IQPMH-2011 showed the highest yield (3.73 t/ha) followed by K-20-IQPMH-19-2 (3.52t/ha).

· Experimentation on OPV Maize genotypes under varying planting density and nutrient revealed that L316 showed superior performance over the check varieties of Hemant (C), and Vijay (C) under higher nutrient application (150% RDF) over the normal.

· Demonstration of BIPM module against fall army worm, Spodoptera furgiperda on rabi maize revealed that the BIPM module was found significantly superior (15.30%) over farmers practice (22.83%).

Finger millet

· Finger millet variety Gossaigaon MaruaDhan-1 was released through State Variety Release Committee. Moreover, a Foxtail millet variety Gossaigaon Local (Yellow seeded) was

recommended for the state of Assam.

Rapeseed and mustard

· Higher profit could be obtained with seed coating with hydro primed (16h @ 20OC) seeds with Bio-phos as compared to dry seeding with B:C 9.52 in Mustard (variety TS 38).

· Application of Tebuconazole50%+trifloxistrobin 25% WG-FS @ 0.5g/l showed the lowest disease severity (15.3 and 11.3 % respectively) of Alternaria blight in mustard variety

‘Varuna’ under zero till condition.

· Epidemiology of Alternaria blight showed that the disease symptom starts from lower leaves and progresses upward, and disease severity is directly correlated with temperature. It was found that as the disease symptom starts appearing from second week of December, the management practices should be started from first week of December before the build-up of the inocula.

Flax

· Intercropping of flax with smother crop for enhancing productivity and suppressing the weeds revealed that Flax +Chenopodium (2:1) yielded highest seed yield of 7.76 q/ha followed by Control of sole flax yielding seed yield 5.89 q/ha & Flax + Spinach (2:1) yielding seed yield of 5.10 q/ha.

Jute

· A number of successful crosses were made viz. Tarun X OIN 147, Tarun X OIN 149, Tarun X OIN 163, Tarun X JROBA-3 for pest and diseaseresistance.

· The successful crosses made were Tarun X JROG-1, Tarun X JRO-2407, Tarun X JBO-1 for fibre fineness, while crosses like Khyati X CIN 172, Khyati X CIN 173, JRC 532 X CIN 172 and JRC 532 X CIN 173 for better fibre strength.

· Soil test-based fertilizer application in Jute based cropping system for improved nutrient management trial revealed that treatment with150% NPK on ST-TY yielded highest capsularis fibre yield of 27.05 q/ha followed by Control of 21.9 q/ha fibre yield & 100% NPK on ST-TY + lime/dolomite application on 25% LR of 20.17 q/ha fibre yield respectively.

· Pre emergence spraying of Ipfencarbazone (22.8%)@ 90 g a.i./ha (0.66 ml/l) + one hand weeding (HW) at 15 DAS resulted highest fibre yield of 25.44 q/ha.

· A tachinid fly was observed to parasitize Bihar hairy caterpillar larva up to 32% during 1st fortnight of July.

· Seed treatment with carbendazim @ 0.1% + foliar spray of azoxystrobin @ 0.1% at 45 DAS (PDI 1.74) was found superior in managing jute diseases

· Chlorantraniliprole 18.5 EC @ 0.3 ml/l water, Lamda Cyhalothrin 5 EC @ 0.6 ml/l water and Spinosand 45 SC @ 0.3 ml/l water were found best in management of lepidopteran pests in jute.

Green Gram

· One new green gram entry, viz., Pusa M 2131 gave an exceptionally high grain yield of 14.86 q/ha in comparison to the check variety IPM 02-3 (14.09 q/ha) during summer, 2021. The variety also showed maximum synchronous maturity and resistance to all important disease and pests.

· One new high yielding green gram variety viz., SGC 25, which is found to be having the characteristics of synchronous maturity up to95.0% will be included in AICRP trials and MLT during kharif,2022. An average yield of 13.78 q/ha was obtained for the variety for consecutive 4 years in station trials.

· One new high yielding black gram variety viz., SBC 51, found to be having erect plant type with shining medium bold grains, will be included in AICRP trials and MLT during kharif,2022. An average yield of 14.38 q/ha was obtained for the variety for consecutive 4 years in station trials.

· The highest grain yield was recorded under the treatment combination involving seed inoculation with Rhizobium and PSB, weed management using post-emergence herbicide propaquizafop 2.5 % + imazethapyr 3.75 %ME @ 125 g/ha at 15-20 DAS and foliar sprays of complex NPK (19:19:19) at flower initiation and pod formation stages of spring mung bean.

· The trial on fortification of zinc and iron through foliar spray in mung bean revealed that the treatment, 0.5 % ZnSO4 spray at flower initiation and pod initiation yielded significantly higher (1,533.33 kg/ha).

· An IPM module with integration of practices like two lines of sesame as barrier crop, installation of yellow sticky trap (1mx1m) coated with white grease @15/ha at 30 DAS, spraying with Azadiractin 1500ppm @ 3ml/l of water at 30 DAS and need based spray of Spiromesifen 22.9 SC @ 1.25ml/l of water or Chlorantraliprole 18.5 SC @ 0.30 ml/l of water in effectively reduces the pest population with 21.43% increase in yield over farmers practice.

· Two sprays of a new insecticide molecule, Diafenthiuron50WP @ 1.25G/l of water at vegetative and reproductive stages of mungbean against sucking pests (white flies, aphids) was found most effective to reduce the pest population level.

Black gram

· Propaquizafop 2.5% + Imazethapyr 3.75 % (ready mix) @ 125 g/ha at 20 DAS yielded significantly higher yield (1,016.67 & 1,506.95 kg/ha respectively).

· Effect of seed solarization on bruchids (pulse beetle) infestation of black gram seed variety PU-31 packed in clear polythene in clear 700 gauges polythene revealed that the germination was above the IMSCS up to six months of storage.

· Neemazol TS and Neemoz Gold @ 50 and 75 ppm recorded germination percentage above IMSCS up to 9 months of storage along with good control over storage insect pests.

Chickpea

· Chlorantriniliprole 18.5SC @ 0.3 ml/lit of water or spinosad 45SC @ 0.3 ml/lit of water can effectively manage Pod borer, Helicoverpa armigera in chickpea crop just after appearance of the pest during reproductive stage.

Pigeon pea

· Hydro-priming for 6 hours significant increases the seed vigour along with 72.97% yield increase in pigeon pea varieties Pusa 191.

Lentil

· Lentil varieties recorded with germination more than IMSCS (>75%) after 6 months of storage in HDPE and Jute bag under ambient storage condition.

Potato

· Three number of spray of Dimethamorph 50%WP @1.5g/litre OR Mandipropamid 25% SC @ 1ml/litre at 10 days interval after the initiation of disease successfully manage the late blight disease in potato.

Sugarcane

· Three sugarcane lines viz., CoBln 4174, CoBln 16502 and CoBln17502 are in the pipeline for recommendation of Assam showing higher CCS, Cane yield, and sucrose content (%).

· Nutrient management under organic cultivation of sugarcane revealed that the crop growth increases with higher level of compost application. Brix and pol reading under

various organic treatments were similar.

Integrated Farming System (IFS)

· While evaluating IFS module/strengthening traditional rainfed IFS for small and marginal farm holdings, it was found that the average yield of 56.95 q/ha in Ranjit and 45.40 q/ha in Numoli with B:C ratio of 2.57 and 2.24, respectively was observed under Crop and INM module. Under Farming System with Horticulture (CHLR) module, Rice-Potato cropping sequence, RIFs farmers (rice - potato - Turmeric) obtain 1168.21qha-1 MCEY.

· IFS models under rainfed condition with Crop (Field & Horticultural) + Cattle + Fishery + Apiary (along with complementary and supplementary units) have been developed for the marginal farmers of Assam.

· Raised and sunken bed module has been standardized for the wet land areas under rainfed situations of Assam and found that a raised and sunken bed module of 1.0 ha wet land area could produce a net return of Rs. 46,117.00 along with a B:C ratio of 2.15.

· Application of stale seedbed technique + reduced spacing (25%) + mulching with previous crop mulch + 1 hand weeding in case of rice-toria-rice sequence was found to be

the best organic weed management practice in terms of weed control with reduced weed density and weed dry weight, REY (7.5 t/ha) and B:C ratio (1.48 with 25% premium price).

· The IFS model under AICRP on IFS at AAU, Jorhat is a carbon-positive model. Out of total GHG emissions from the cropping sequences (302.57 kg CO2 equivalent), the emission contribution was highest (108.36 kg CO2 equivalent) from winter rice – Toria – Cowpea (fodder) sequence.

Vegetables

· Intercropping of black gram with okra (as 1:1 in additive series) is found to be the best with economic yield of 259.88 q ha-1, B:C ratio of 4.65 with LER 1.59 and 36.91 % of land is saved.

· Ridge Gourd (Luffa acutangula L.) cultivated by using Enriched compost 2.5 t ha -1 showed the highest economic yield and B:C ratio of 3.07.

· Intercropping of radish with lentil is found to be the best treatment with economic yield of 210.75 q ha-1, BC ratio of 5.65 with LER 1.65 and 32.16 % of land is saved.

· Application of Rock Phosphate + Enriched Compost (2.5 tha-1) + Azotobacter + PSB (as root dip treatment) is found to be the best organic treatment in Broccoli with economic yield of 185.2 q ha-1.

· Evaluation of entomopathogenic biopesticide against Aphis craccivora in cowpea (Vigna unguiculata) revealed that application of Verticilium lecanii (1×108cfu/ml@5gm/lit) showed minimum number of A. craccivora(10.83/ terminal shoots).

· Six numbers of alternate sprays of insecticides at fortnightly intervals contributed maximum protection from infestation of borer larvae per five plants and per cent fruit damage of 1.68 and 7.33 %, respectively as against 2.02 and 8.15 % in BIPM plot.

· Spraying of L. lecanii (V1-8 isolate) @ 5 ml/litre was proven to be the best in reducing cabbage aphid, Brevicoryne brassicae and diamond back moth, Plutella xyllostella in cabbage.

· The BIPM plot against fruit flies Deccaus bactrocera against cucumber registered 16.81% fruit damage which was significantly different from chemical control with 28.41% after 65 Days after treatment.

Coconut

· Studies on collection, conservation and evaluation of local germplasm of coconut in Assam revealed a significantly the highest nut yield of 85.7 nuts/palm/year in IC 610357.

· With regard to evaluation of five new coconut hybrids of location specific cross combinations, significantly the highest nut yield (81.5 nuts/palm/year) was recorded in AGT x PHOT. The cross combination AGT x PHOT also recorded highest number of inflorescences (11.6) per palm per year as well highest number of female flowers (26.5) per inflorescence as compared to other crosses.

Cocoa

· Multilocation trial (MLT) of 16 cocoa clones under palms revealed that the highest plant height, stem girth, jorquette height, plant spread (E-W and N-S) and canopy area (8.95 m2) were recorded in VTLC-20. Cocoa clone VTLC-20 also registered maximum no. of pod/tree (39.0), no. of bean/pod (41.8) and dry bean yield/tree/year (2.28 kg) as against the lowest under YET.

orchids

· Amongst the evaluated genera under terrestrial group, Cymbidium aloifolium registered maximum number of vegetative shoots (19.54), number of flowers (42.78) and

inflorescence length (62.45cm). However, Spathoglottis plicata registered maximum flower duration (65.80 days).

Tuberose

· The varieties Arka Prajwal registered maximum plant height (87.64 cm), flowering duration (19.63 days), rachis length (29.31cm), florets number (46.43), diameter of florets (4.23 cm), weight of individual florets (1.06 g), weight of florets per spike (49.16 g) and florets yield (28.29 q/ha).

· Bidhan Rajani -19 recorded maximum days of flowering duration (32.50 days) and was closely followed by Bidhan Rajani-24 (31.22 days), Vaibhav (31.12 days) and Suhasini (30.22 days). The variety Bidhan Rajani H-19 recorded maximum duration of flowering (34.99 days) and number of florets in an individual spike (46.49 Nos./spike), number of

flower spikes per clump (2.38), spike yield (2.47 Lakh/ha), loose flower yield (19.01 t/ha/year) ,bulb yield (138.61 Nos./clump) and B:C ratio (4.42).

· Tuberose spikes treated with 2% Orange dye combined with Sucrose 2% and HQS (200ppm) showed maximum colour retention (5.50 days) and vase life (7.20 days). Highest freshness index and shelf life extension were recorded in flowers treated with Boric acid 2 % (61.03% and 59.67 hrs respectively).

Varieties developed at AAU, Jorhat and notified by Central Crop Variety Committee (CVRC)

1 Rice Manohar Sali (Date of release: February 20, 1970)

2 Rice Lachit (Date of release: November 04, 1992)

3 Rice Chilarai (Date of release: November 04, 1992)

4 Rice Lakhimi (Date of release: November 04, 1992)

5 Rice Luit (Date of release: May 15,1998)

6 Rice Keteki Joha (Date of release: September 20, 2006)

7 Rice Jalkuwari (Date of release: March 30, 2017)

8 Rice Jalashree (Date of release: March 30, 2017)

9 Rice Kanaklata (Date of release: March 30, 2017)

10 Rice Gitesh (Date of release: March 30, 2017)

11 Jute Khyati (Date of release: March 30, 2017)

12 Rice Dehangi (Date of release: August 25, 2017)

13 Rice Inglongkiri (Date of release: August 25, 2017)

14 Rice Rongkhang (Date of release: August 25, 2017)

15 Rice Numoli (Date of release: October 07, 2020)

16 Toria Jeuti (Date of release: October 07, 2020)

17 Sesame AST-1 (AAUDR9304-14-4-1) (Date of release: October 07, 2020)

18 Brinjal ABU (GB-09-12) (Date of release: April 07, 2021)

19 Coconut Kamrupa (Assam Green Tall) (Date of release: April 07, 2021)

20 Toria AAU TS 38 (Date of release: January 03, 2022)

21 Mungbean Rupohi (AAU SGC 16) (Date of release: August 31, 2022)

22 Urd bean Shyamal (AAU SBC 40) (Date of release: August 31, 2022)

23 Rice Haccha AAAUDPU Dhan 04) (Date of release: August 31, 2022)

24 Rice Langpi (AAUDPU Dhan 05) (Date of release: August 31, 2022)

25 Rice Diyung (AAUDPU Dhan 06) (Date of release: August 31, 2022)

26 Rice AAU-TTB-Dhan-40 (Dholi) (Date of release: August 31, 2022)

27 Rice AAU-KMJ-Dhan-46 (Surma Dhan) (Date of release: August 31, 2022)

28 Finger millet Gossaigaon Marua Dhan (Date of release: August 31, 2022)

29 Sesame AAU-SHL-Til-1 (Date of release: August 31, 2022)

30 Rice Prachur (Date of release: September 25, 2023)

31 Rice Shatabdi (Date of release: September 25, 2023

32 Rice Patkai (Date of release: September 25, 2023)

33 Mungbean SGC 20 (Buroi) (Date of release: September 25, 2023)

34 Urdbean SBC 47 (Pabhoi) (Date of release: September 25, 2023

35 Field pea AAU SPC 101 (Xeuti) (Date of release: September 25, 2023)

36 Rice Amreng (AAU DPU Dhan 07) (Date of release: March 27, 2024)

37 Foxtail Millet AAU-GSG-Cawn 1 (Gossaigaon Cawn) (Date of release: March27, 2024

38 Urdbean AAU SHL Urd 03 (SB 42-8) (Date of release: March 27, 2024)

Research Achievements under Directorate of Research (Agri), AAU, Jorhat during 2022-23

Rice

Ø Three high yielding rice varieties viz., Prachur, Shatabdi and Patkai were notified by the Central Variety Release Committee (CVRC) for cultivation in the state of Assam.

Ø One promising rice variety-Surma Dhan had been tested under AVT2-SDW and found promising in Zone-III. The variety has been identified by the Variety Identification Committee (VIC) for cultivation in Zone-III (West Bengal, Bihar, Odisha and Uttar Pradesh) besides Assam.

Ø Spraying of Cartap hydrochloride 50% SC @ 2.0ml/litre at 30 days after transplanting (DAT) and 50 DAT against stem borer and leaf folder reduced 58.8 % dead heart and 63.7% white ears and 53.6% leaf folder damage leaves with cost benefit ratio of 1:1.67. The technology is accepted for recommendation in Assam.

Ø Spraying of Chlorantraniliprole 0.4G @ 50g a.i /ha at 30 days after transplanting (DAT) and 50 DAT against stem borer and leaf folder reduced 47.2% dead heart and 53.7% white ears and 57.3% leaf folder damage leaves with cost benefit ratio of 1:1.36. The technology has been accepted for recommendation in Assam.

Ø Application of silicon in the form of orthosilicic acid granules @20 kg/ha each at maximum tillering and at flowering is effective in improving plant growth, yield and increase the tolerance to both biotic (stem borer, leaf folder, grain discolouration, blast, etc.) and abiotic (moisture stress) stresses in rice and recommendation for all zones of Assam

Ø RDF and Split application of vermicompost at the time of land preparation and maximum tillering stage produced highest yield with B:C ratio 2.51 (Vermicompost commercial) and 2.82 (Vermicompost on farm), Six actinobacterial strains having antagonistic activity against rice sheath blight and bacterial leaf blight pathogens have been isolated under AAU R&D project. Actinobacterial strain ‘Act 209’ showed maximum 54% inhibition of R. solani and 30% inhibition of X. oryzae pv oryzae.

Ø Application of Pongamia oil @ 5ml/l was reported to be effective in controlling rice stem borer followed by Pongamia oil @ 3ml/l and Agnihastra 5.0 % (Neem leaves, Ghomutra, Garlic, Green Chilly, Pepper, Jaggery, onion, tobacco and other natural herbs), respectively.

Ø For management of Sheath Blight of Rice revealed that lowest diseases incidence was observed in the Seedling root dip + Spraying with 1:10 vermicompost to water ratio for EP of 24 hour followed by Seedling root dip + Spraying with 1:10 vermicompost to water ratio for EP of 48 hour.

Ø Demonstrations of BIPM of rice Dead heart (%), WEH (%) and LFDL (%) were significantly lower in BIPM and Chemical control plot than control. Whereas no significant difference in between BIPM and chemical control was observed in terms of Dead heart (%), WEH (%) LFDL (%) and Yield. BIPM and chemical control plots recorded 4570 kg/ha yield and 4780.71 kg/ha yield which were 25.91% and 29.18% more yield than control.

Ø Fifty germplasm of rice tested against Meloidogyne graminicola and all were found susceptible.

Ø Ufra disease caused by Ditylenchus angustus was recorded in Dolpota, Basa gaon, Rantijan and Khoga of Lakhimpur district.

Ø Soil application of Pseudomonas fluorescens @20g/m2 and Bacillus subtilis @20g/m2at sowing were found effective against M.graminicola in direct seeded rice

Ø Soil application of fluensulfone 2%GR @1.0 kg a.i./ha was found effective against M .graminicola, in transplanted rice when applied in nursery.

Ø Nursery treatment with Biofor pf-2 @20g/m2 was found effective in reducing the population of M.graminicola and increasing yield by 12.13% in rice.

Ø Four fungal and 2 bacterial isolates were found effective against M. Graminicola

WHEAT AND BARLEY

Ø Four common wheat varieties were tested against five standard checks in 4 RBD. The test var. PBW 826 ranked top with 42.3 q/ha followed by another test var. HD3388 (41.8 q/ha), check vars. HD 3086 (41.5 q/ha) and HD 3249 (40.8 q/ha).

Ø Five common wheat varieties developed through special marker assisted backcross breeding were tested and the check var. HD 2967 (39.4 q/ha in 136 days) ranked top followed by test vars. HD 3406 (33.9 q/ha in 131 days) and HD3411 (32.3 q/ha in 134 days).

Ø Among the Trombay wheat mutants, the test vars. TAW119 (47.3 q/ha in 106 days) ranked top followed by TAW182 (43.4 q/ha in 103 days), TAW228 (41.8 q/ha in 105 days).

Ø Out of 50 entries maintained at CYMMIT International Nursery, 6 promising entries identified were: 2006, 2007, 2013, 2015, 2030, and 2070 on ear length and lodging tolerance. However, no one was earlier in maturity (< 110 days).

MAIZE

· The trial on crop residue management in traditional and emerging maize system in rabi revealed that the treatment with stubble incorporation + spraying with microbial consortia recorded the highest yield in rice- maize cropping sequence followed by zero tillage + residue retention + spraying with microbial consortia.

· The experiment on weed management in maize system in rabi recorded the highest grain yield (5267 kg/ha), B.C ratio (2.34) in treatment with atrazine 1000 g/ha (PE) fb Tembotrione @ 120 g/ha at 25 DAS, which has been appeared as zonal recommendation in rice maize cropping sequence.

· Moreover, the highest grain yield (6333kg/ha), Net return (Rs.74500/ha) and B.C ratio (2.89) was recorded in treatment with 75% RDF through chemical fertilizers + 2 tonnes FYM/ha + Bio-fertilizer @50g/kg of seed + 2 foliar spray (0.5% ZnSO4) was found significantly superior over the control and the technology has been recommended from multilocational trial for the year 2023-24.

· Different entries of Extra early, Early, Medium and Late durations are being tested and following varieties performed to be the best during 2022-23: AVT I Late (1043): DKC 9226, AVT I Medium (1044): DKC 9224, AVT II Medium (1045):BH 417206, AVT I Early (1046): CP 999, Baby corn I-II-III (1064): JH 32434, Sweet corn (911): ISCH 1901, QPM (1066): QPMH 22-21

Ø BIPM against fall armyworm, Spodoptera furgiperda showed that there was no significant difference in yield and cob damage. The number of larvae per plant and percent plant damage was more in BIPM plots. whereas the number of predators per plant and percent egg parasitism was significantly higher in BIPM plots.

Millet:

· Finger millet variety AAU-GSG- MaruaDhan 1 was notified through Central Variety Release Committee

· Foxtail millet variety AAU-GSG- Cawn 1 was released through State Variety Release Committee

JUTE AND ALLIED FIBRES

Ø Successful crosses made for development of olitorius jute varieties with resistance to pests and diseases with 1 (Tarun X OIN-147) X Tarun;2. Tarun X WCIN 136; 3 (Tarun X OIN-149) X Tarun; 4 (Tarun X OIN 163) X Tarun.

Ø New jute variety-UBCJ-3 (33.14 q/ha) out yielded the best check JRC-517 (31.21 q/ha). BRCJ-6 (31.62 q/ha) was at par with UBCJ-3.

Ø Jute + Red amaranthus inter cropping (broadcasting of Red amaranthus seed @ 10 kg/ha in inter row space of jute) resulted highest equivalent fibre yield of 37.93 q/ha. Pre emergence spraying of Pendimethalin 35% EC @ 525 g/ha (48 hrs of sowing with irrigation or sufficient rain) + one hand weeding (HW) at15 DAE showed lowest weed dry matter of 1.69 q/ha. Highest weed control efficiency of 56.37 % was found in pre emergence spraying of Pendimethalin 35% EC @ 525 g/ha (48 hrs of sowing with irrigation or sufficient rain) + one hand weeding (HW) at15 DAE.

Ø 50% NPK + FYM @ 10 t/ha + PSB yielded highest green biomass yield of flax i.e. 82.40 q/ha

Ø Seed treatment with carbendazim 50 WP @ 0.1% + foliar spray of azoxystrobin @ 0.1% at45 DAS was found to be promising in managing wilt disease of flax.

Ø Seed treatment (carbendazim @ 2g/kg + imidacloprid 600 FS @ 4 g/kg) + spraying of spiromesifen240 SC @ 0.2% at 40 DAS + spraying of lamda cyhalothrin 5 EC @ 0.6 ml/l at 60 DAS and spraying of tebuconazole @ 0.15 % at 60 DAS were promising yielding highest fibre yield of 29.40 q/ha.

Ø Olitorius germplasm JRC-412 (PDI 0.96) and JRO-129 (PDI 1.53) were found to be tolerant against root rot and stem rot.

Rapeseed and Mustard

Ø Trial on bio-management of rapeseed-mustard diseases revealed that the seed treatment with Trichoderma harzianum @ 10g / kg + foliar spray of T.harzianum @ 6g/l at 60 and 75 DAS was found to be most effective with PDI of 21.37 against Alternaria leaf blight disease and yield of 13.87 q ha-1.

Ø A total of three hundred ninety-seven (397) and eighteen (18) entries of Rapeseed-Mustard were screened against Alternaria blight and Sclerotinia stem rot disease respectively, during Rabi 2022-23. Among them, UND-22-42 & NDN-22-1 showed Moderately Resistant (MR) reaction to Alternaria leaf blight disease.

Ø Organic package of practices of Toria was developed.

LINSEED

Ø Effect of fertilizer in relation to seed yield was significant and significantly highest yield was (736.2 kg/ha) recorded with an increased fertilizer rate upto 100% RDF followed by 50% RDF (711.5 kg/ha). As regards to nutrient management through nano urea, highest seed yield was (730 kg/ha) recorded with two sprays of nano urea @3 ml/litre each at flowering and capsule development stage.

Ø Among the agro techniques for organic linseed production, the crop was heavily influenced by wilt disease. The significantly highest yield (253.7 kg/ha) was recorded in treatment receiving 33% of recommended N through FYM and 33% of recommended N through neem cake and foliar spray of vermi-wash (10% at branching, flowering, and capsule development stages)

Ø The combined application of micronutrients zinc and boron through soil had a significant effect on seed yield. The soil application of ZnSo4 @ 25kg/ha with Borax @1.5 kg/ha recorded highest seed yield (804 kg/ha).

Ø Varietal difference in relation to seed yield was significant and significantly highest yield was recorded with an increased fertilizer rate upto 150% RDF in Variety T-397 (490.7 kg/ha) followed by Variety Shekhar (443.22 kg/ha)

Pulses

Ø The survey revealed that higher levels of collar rot disease incidence was observed in North Karimganj block with mean disease incidence of 35.19% followed by Borkhola block of Cachar with 34.95% of disease incidence. Based on symptomatic observation it was identified as Sclerotium sp.

Ø Biological suppression of chick pea pod borer Helicoverpa armigera and soil borne diseases of chickpea found that the incidence of fusarium wilt was varied from 0.026% to 0.046%. The percent pod damage and number of natural enemies and was significantly higher in control (45.75%) followed by pheromone @ 25/ha(26.55%), treatment Seed treatment with @10g/Kg and soil application twice @5kg/ha of Trichoderma harzianum NBAIR strain at 25 & 50 days after sowing + Spraying of Bacillus thuringiensis NIBSM Bt 18 1% @10ml/L two sprays at pod initiation and pod formation stage at 15 days interval (23.18%) and lowest was observed in chemical control (9.27%). All the treatments registered significantly higher yield than control.

Ø One new green gram entry, viz., BCM 20-1 gave an exceptionally good grain yield of 1427 kg/ha in comparison to the check variety SGC 16 (1278kg/ha) during summer, 2022. The variety also showed above 90 % synchronous maturity and resistance to all important disease and pests.

Ø One newly developed black gram variety ‘AAU SBC 50’ has completed all the formalities including DNA profiling at NBPGR. The variety was passed by the Plenary (Kharif), 2022 for submission to SVRC for release and notification.

Ø One new high yielding green gram variety viz., SGC 25, which is found to be having the characteristics of synchronous maturity up to 95.0% was included in AICRP trials and MLT during kharif, 2022. An average yield of 1378 kg/ha was obtained for the variety for consecutive 4 years in station trials.

Ø One new high yielding black gram variety viz., SBC 51, which is found to be having erect plant type with shining medium bold grains was included in AICRP trials and MLT during kharif, 2022. An average yield of 1438 kg/ha was obtained for the variety for consecutive 4 years in station trials.

Ø A black gram entry KU 22-93 (1596 kg/ha) gave promising yield during kharif, 2022. The entry will be evaluated further.

Ø The highest grain yield (9 q ha-1) was recorded under the treatment combination involving seed inoculation with Rhizobium and PSB each @ 50 g/kg, weed management using post-emergence herbicide propaquizafop 2.5 % + imazethapyr 3.75 %ME @ 125 g/ha at 15-20 DAS and foliar nutrition with two sprays of complex NPK (19:19:19) @ 0.5% at flower initiation and pod formation stages.

Ø Altogether seventy mungbean AVT entries were screened against major insect pests viz.,leaf folder, Nacoleia vulgalis, pod borer, Maruca testulalis and pod bugs, Riptortus pedestris and Nezara viridula during Kharif, 2022. Most of the entries viz., twenty six entries such as KME 22-02, KME 22-07, KME 22-11, KME 22-12, KME 22-13, KME 221-14, KME 22-15, KME 22-18, KME 22-20, KME 22-26, KME 22-28, KME 22-34, KME22-39, KME22-40, KME22-43, KME 22-48, KME 22-49,KME 22-51, KME22-53, KME22-55, KME22-57, KME22-58, KME22-59, KME22-61, KME 22-65 and KME 22-66 showed low incidence of leaf folder, low pod damage due to borer and bugs and gave higher yields.

Ø Assessment of economic losses caused due to web blight disease of Kharif urdbean: Lowest Per cent Disease Intensity (PDI) of 9.28 with a yield of 18 q ha-1 and B:C of 2.16 was found in moderately resistant variety (SBC 40) with disease management practice (Seed treatment with imidacloprid @ 5g/kg + foliar spray of Tebuconazole 50 % + Trifloxystrobin 25 % wg @ 0.75 g a.i/l ) and need based spray of insecticide.

Ø Assessment of economic losses caused due to diseases of Kharif mungbean: Lowest Per cent Disease Intensity (PDI) of 12.63 with a yield of 13 q ha-1 and B:C of 1.71 was found in moderately resistant variety (SGC 16) with disease management practice (Seed treatment with imidacloprid @ 5g/kg + foliar spray of Tebuconazole 50 % + Trifloxystrobin 25 % wg @ 0.75 g a.i/l) and need based spray of insecticide.

Ø Seven numbers of fungicides (viz.,Fosetyl AL @0.1%, Carbendazim 50WP @0.1%, Tebiconazole 25EC @0.1%, Propeconazole 25EC @0.1%, Azoxystrobin 13SC @0.05%, Hexaconazole @0.1%, Captan 50WP @ 0.25%) were evaluated against wilt disease of lentil. Among them seed treatment with Azoxystrobin 23 SC @0.05% recorded lowest disease incidence with increased yield over control

Ø Six genotypes including checks were tested and the genotypes differed significantly among themselves under late sown condition. Highest seed yield was recorded by the genotype GNG 2299 (NC) (1317 kg/ha) followed by BG 372 (NC) (1202 kg/ha) significantly out yielding the check GNG 2207 (1018 kg/ha).

Ø Eight ground nut genotypes were tested, and the genotypes differed significantly among themselves in respect of pod yield. The genotype TG 81 (3218 kg/ha) recorded the highest pod yield marginally higher than the best check TG 51 (3148 kg/ha). The trial will be repeated during rabi, 2022-23.

Ø Foliar spray of 0.5% NPK (19:19:19) at pre-flowering and pod initiation stage recorded significantly higher seed yield which was at par with 0.5% NPK (17:40:0) spray at pre-flowering and pod initiation and Seed inoculation with Rhizobium, PSB and KSB each @ 50 g/kg seed at sowing as compared to other treatments.

Ø The chickpea crop receiving inorganic treatment of 100% RDF + Foliar application of DAP+ZnSO4 at pre-flowering and pod development stages recorded higher seed yield followed by receiving organic treatment of FYM (@ 4t/ha) + foliar (Biophos+Biozinc) each @ 10 ml/lit at pre-flowering and pod development stages as compared to other treatments.

Ø Oganic package of practices of Toria and Lentil were developed and submitted for organic PoP.

Ø Rajabari, Panjan, Deberapara and Chinatoligaon are found hot spots of Meloidogyne incognita in vegetables and fruit crops.

Ø Heterorhabditis bacteriophora was identified from Jorhat district Assam with a frequency of 5.0%

Ø Fifty germplasm of tomato were screened against M. incognita and all were found susceptible

Ø Soil application of neem cake @1t/ha + seed treatment with B.subtilis @10g/kg seed was found effective against M.incognita in cowpea. Neem cake was found to take major role.

Ø Pochonia chlamydosporia and Bacillus pumilus when applied at the time of planting and again at 45 DAP, the root knot nematode Meloidogyne incognita can be managed in protected cultivation

Sugarcane

Ø While studying the micronutrient requirement of the crop in the problem areas for improving the quality of cane juice, there was no observable difference in the crop growth due to application of different micronutrients. However, application of Zn is found to influence the quality of juice regarding sucrose content.

Ø While studying the nutrient management under organic cultivation of sugarcane, it was revealed that application of compost at higher doses resulted crop growth. Brix and pol reading under various organic treatments were similar.

MEDICINAL AND AROMATIC PLANT

Ø A sustainable essential oil production unit is established at AAU-SMAPRS, Buralikson where extraction of oil from distillation plant is in continuation. Near about 1.5 ha area is under citronella and lemon grass cultivation and expansion of the same is under progress. New plantation of Homolomena sp is also undertaken at the station.

VEGETABLES

· Two technologies on BIPM of cow pea and cucumber was developed. The technology on cowpea was recommended by the technical committee meeting, kharif, 2023 of AAU to PoPas “Three sprays of Verticiliumlacanni 1x108 cfu @ 5ml/lit of water was effective in reducing the aphid (Aphis craccivora) population upto 78.28% with a B:C of 1.74. First spray should be done at 15-20 days after germination followed by second and third spray after 15 days interval”.

· Demonstrations of BIPM of tomato showed that fruit borer damage was reduce to 72.17% in BIPM Plot and78.71% in chemical treated plots. There was no significant difference in between yield of BIPM (6785 kg/ha) and chemical treated plots (7164 kg/ha) with B:C ratio 1:2.86 and 1:3.48, respectively.

· Thirty-three germplasm of mungbean and 15 germplasm of urdbean were screened against M. incognita and all were found susceptible to highly susceptible.

· Eleven fungal and 18 bacterial endophytes were isolated from rhizosphere of different crops.

Citrus

Ø AAU-CPCRS, Tinsukia presently maintaining total 147 numbers of different citrus germplasm under AICRP (F) of which about 100 numbers as primary collection and 47 nos as secondary collections. The IC numbers were obtained for about 41 numbers of germplasm.

Ø Total five numbers of entries namely Flame Grapefruit, NRCC Grapefruit- 6, Star Ruby, Red Blush, Marsh Seedless and Local check were evaluated. Out of these, Star Ruby, Red Blush, Marsh Seedless and Local check were fruiting. The experiment is in initial stage and is in progress.

Ø Out of all nine different entries, the AAUCPCRS-4 was recorded to be best performer in terms of yield (12.32 t/ha) along with fruit quality parameters viz TSS=10.11 Brix, Acidity=0.78%, Juice Content=53.34%, Ascorbic acid=31.76mg/100g and Hedonic scale score=9.7. The experiment is continuing.

Ø Three varieties namely Cutter Valencia, Mosambi and Sathgudi were evaluated. The fruit yield of Mosambi variety was 0.25t/ha in a year with quality recorded as TSS: 7.07 Brix, Juice content 29.17% and Ascorbic acid: 52.89mg/100g.

Ø Application of 1/6 of RDF for 1 to 6 years followed by application of 60% RDF after 6 years (A3B3)recorded maximum plant height (3.27m), and canopy volume (11.88 m3). Higher organic carbon and nutrient status were also found in treatment A3B3. Regarding quality parameters, TSS (8.5 0Brix) and maximum number of fruits per tree (228.3) were observed in treatment A3B3.

Ø Reduced spacing (500 plants/ha) with 75% inorganic source of N, 25% organic source of N and 100 % P and K (S2L1) recorded maximum canopy volume (28.88m3). Higher organic carbon and nutrient status (N= 348 kg/ha, P2O5= 24.87 kg/ha, K2O = 183.8 kg/ha) were also found in S2 L1 treatment.

Ø Treatment (T4) having 75% Vermicompost (on N equivalent basis of RDF) + Trichoderma harzianum (30-40 ml/plant) + Azadirachtin (1% at 3-4 ml/litre as spray) + Pseudomonus fluorescence (30-40 ml/plant) was found effective for improved vegetative growth as compared to other treatments. 0. Standardization of stage wise water requirement in Citrus Crop: Mandarin

Ø Although, no new insect-pest was recorded during 2022-23, one new natural enemy, Spider species, Chilobrchys hardwickei (Theraphosidae) was recorded and identified from Khasi mandarin ecosystem during 2022-23.

Significant Research Achievements during 2023-24

Rice

Ø HYVs viz. Prachur, Satabdi and Patkai which are recommended in 2023 for all zones of Assam.One promising rice variety, Surma Dhan has been notified by the CVRC for the states of West Bengal, Bihar, Odisha and Uttar Pradesh. OFT of two promising Rajmah lines, AAU-KMJ Rajmah-1 and AAU-KMJ Rajmah-2 in all the six zones of Assam. MLT of one promising aromatic short grain rice line, AAU-KMJ Dhan-47 in IVT-AGT trial under AICRIP.Conducted both MLT as well as OFT of one promising purple rice line, AAU-TTB Dhan-41 (Labanya) in all the six zones of Assam.Conducted MLT of two promising rice lines, TTB 2010-56 and TTB 2010-27 in all the six zones of Assam.Across all the stresses (water stress and anaerobic stress), four rice entries viz. Binnaful, NICRA-16, IC-516149 and CR-3439-4-E-17-2-1-B-1-S-1 showed tolerance to both water stress and anaerobic stress (Multiple abiotic stresses).IET 30241, IET 29859, IL 19100 and IL-19103 have been identified as drought tolerant varieties and are suitable for cultivation under rainfed conditions.

Ø Application of silicon in the form of orthosilicic acid granules @20 kg/ha each at maximum tillering and at flowering is effective in improving plant growth, yield and increase the tolerance to both biotic (stem borer, leaf folder, grain discolouration, blast etc.) and abiotic (moisture stress) stresses in rice.

Ø Two sprays of Cartap hydrochloride 50% SC @ 2 ml/lit at 30 and 50 days after transplanting is enough for management of stem borer and leaf folder of rice.Stem Rot disease of rice could be managed through chemical fungicide Tebuconazole 25.9% EC @ 1.5 mL/L Pongamia oil @ 5ml/l was reported to be effective in controlling rice stem borer followed by Pongamia oil @ 3ml/l and Agniastra 5.0%respectively.Chlorantraniliprole 18.5 %SC at 20-30 DAT +Neem oil @ 5ml/l at 40-50 DAT was reported to be effective in controlling rice stem borer and rice leaf folder.The lowest PDI (22.31%) of sheath blight disease of rice with highest yield (4.35 ton/ha) was observed in plant treated with Propiconazole @0.1%.

Ø Out of thirty-nine isolates, three microbes were identified responsible for rice grain discoloration as Fusarium sp., seven as Rhizopus sp., four as Aspergillus sp., thirteen as Curvulariasp., four as Helminthosporium oryzae, two as Pyricularia oryzae and two as Trichoderma asperellum.

Wheat

Ø Trombay wheat mutants revealed promise of five varieties, viz., TAW 119 (39.92 q/ha in 112 days), TAW 142 (39.28 q/ha in 117 days), TAYT 4 (38.61 q/ha in 113 days) and TAW 228 (38.40 q/ha in 120 days).CYMMIT International Nursery (33HRWSN) (Trial ID 49090): 2 promising entries viz. 2024 and 2026 on per plant yield, ear length and lodging tolerance. Basal application of Borax @ 7.5 kg/ha(1 kg/bigha) for Lower Brahmaputra Valley Zone, 10 kg/ha (1.33kg/bigha) for North Bank Plains Zone and Central Brahmaputra Valley Zone in addition to recommended dose of NPK fertilizers has been recommended.

Millet

Ø The first foxtail millet variety of Assam AAU-GSG-Cawn-1 notified through CVRC.

Maize

Ø Demonstrationof BIPMmoduleagainstfallarmyworm,Spodopterafurgiperda, recorded higher number of predators per plant and percent egg parasitism as compared tochemical application. A total of 15 public sector maize hybrids are in MLT in 5 zonal locations for onward recommendation and release.

Mung bean

Ø Mungbean entries namely RMG 1196(1501kg/ha) and SML 2108 (1493 kg/ha) showed promise for summer and KM23-112(1525kg/ha) and KM 23-128 (1444kg/ha) for kharif. Treatment with propaquizafop (2.5%) + imazethapyr (3.75%) 125 g ai/ha at 15-20 DAS resulted in the highest benefit-cost ratio (2.99).

Soybean

Ø The new breeding line AAU JRS 18 (2222 kg/ha) recorded the highest seed yield.

Ø First report of Fusarium incarnatum associated with root rot diseases of soybean through phylogenetic analysis was done.

Urd bean

Ø During 2023-24, one Mungbean var. AAU SGC 20, one Urdbean var. AAU SBC 47 and one Field pea var. AAU SPC 101were notified by CVRC for cultivation in Assam.Urdbeanentries KPU 18-5(1539kg/ha) and PU 1804 (1403 kg/ha) for summer and KU 23-73 (1859 kg/ha) and KU 23-63 (1709 kg/ha) for kharif. MLT on Mungbean var. SGC 25 and Urdbean var. SBC 51 completed duringkharif 2023-24. Application of Propaquizafop 2.5% + imazethapyr 3.75 % @ 125 g/ha at 15-20 DAS resulted in highest yield. Foliar nutrition with 2 sprays of NPK 19:19:19 @ 0.5 % at flower and pod initiation recorded the highest grain yield closely followed by two sprays of nano urea @ 0.25 % at flower and pod initiation stages.Organic Package of Practices on KharifGreengram var. SGC 16 (Rupohi) and Blackgram var. SBC 40 (Shyamal) has been recommended

Chickpea

Ø PG 265 variety (AVT-2) was the highest yielder with 1264 kg/ha, and at par with GNG 2207, RSGD 1155 with 1118 kg/ha was the highest yielder in AVT1. Application of Oxyfluorfen 150 g a.i./ha (PE) fb Topramezone@ 20.6 g a.i./ha at 14-21 DAS recorded significantly higher seed yield of chickpea (1175 kg/ha)

Lentil

Ø Lentil IVT +AVT 1 (small seeded):Highest Yielders were PLS 22-1 and BRL 32-2 under small seed category, while BCL 10145 has been found to be the highest yielder under rice fallow condition.Propiconazole 25 EC (0.1%) was highly effective in managing the wilt disease of lentil.

Field Pea:

Ø SPC 105 of field pea is a green seeded line, which is showing good promise.

Horsegram

Ø Package of practices of Horse gram developed and accepted as ad-hoc basis.A local cultivar of horse gram, Mancachar Local is set for MLT for onward recommendation and release.

Jute

Ø Best entries of Capsularis Jute Germplasm were CIN-265, CIN-248, and CIN-251 for plant height; while CIN-252, CIN-242, and CIN-248 for base diameter, and CIN-274 and CIN-259 for fibre yield per plant.Best entries of Olitorius Jute Germplasm were OIN-237 and OIN-248 for plant height Application of 100% NPK on Soil Test-Based Targeted Yield (ST-TY) + organic manure (equivalent to 5 t/ha of FYM) resulted in the highest fibre yield of 24.49 q/ha.Jute + mung intercropping (1:1) resulted in the highest equivalent fibre yield of 22.16 q/ha. Post-emergence spray of Quizalofop ethyl 10% EC @ 38 g/ha at 15 DAE + one hand weeding at 30 DAS showed the highest weed control efficiency.Flax seed yield was highest in Flax + Red Amaranthus (2:1) intercropping among various treatments.

Rapeseed and Mustard

Ø Breeding lines namely SBG-23-32, UDN-23-15, NDN-23-18 & SIVT-23-122 showed Moderately Resistant (MR) reaction to Alternaria leaf blight disease.Recommendation made on Basal application of N-P2O5 -K20 @ 60-30-30 kg/ha along with foliar application of 200ppm salicyclic acidat flowering and siliqua formation stages of toria.Seed treatment with Trichoderma harzianum@ 10g / kg + foliar spray of T.harzianum @ 6g/l at 60 and 75 DAS was found to be most effective with PDI of 20.70 against Alternaria leaf blight disease. Apply two irrigations of 4 cm depth at pre-flowering (20 DAS) and flowering (40 DAS) stages along with a spacing of 25 cm x 25 cm in toria

Sesame

Ø Organic Package of Practices on Summer &Kharif Sesame var. AAU SHL TIL 1 has been developed and recommended

Linseed

Ø LCK 2209 was recorded to be the highest yielder, followed by SLS 143.Linseed ERA (Irrigated) best performers were Garima, Neelum, and Meera for seed yield.Zero till sowing of linseed after medium duration paddy variety Numoliwasobservedas the best cropping sequence. Among the nitrogen management treatments, application of 75 % of RDF along with 2 foliar sprays of Nano urea @ 3ml/lit at Flower initiation and capsule development stage gave highest seed yield. Seed treatment with Azoxystrobin 25% SC @1.0 ml/kg seed + soil application of Azoxystrobin 25% SC @1.0 ml/l at 30 DAS was highly effective in managing wilt disease of linseed.

Sugarcane

Ø Multilocation Trial on Sugarcane Variety Kakodunga (CoBLn 04174) recorded as yield advantage of 15.70 % over the check variety Borak. Application of 15 t/ha compost with FYM @5 t/ha one month before planting produced the highest cane yield.Study on the effect of intercropping with sugarcane resulted feasibility of growing cowpea as successful intercrop in sugarcane.

Potato

Ø Three numbers of Spray of Dimethamorph 50% @1.5g/lit at 15 days interval after the initiation of disease successfully manage the late blight disease in potato.

Citrus

Ø Pummelo variety NRCC-Pummelo-2 recommended for commercial cultivation in Assam. Molecular indexing of Khasi mandarin and sweet orange candidates of different locations of Assam against Citrus greening disease (CGD) and Citrus tristeza virus (CTV).The studies on scionic compatibility of Assam lemon with twelve different Citrus rootstocks revealed that Assam lemon has better graft compatibility with rootstocks such as Rough lemon, NRCC–4, NRCC–1, Citrange.

Banana

Ø Foliar spray of imidacloprid 17.8 SL@ 0.3 ml/L or thiamethoxam 25 WG @ 0.2 g/L is effective in managing banana leaf and fruit scarring beetle population. The incidence of red palm weevil, Rhynchophorusferrugineus Olivier (Coleoptera: Rhynchophoridae) on banana cultivar, “AsomiyaMalbhog” was reported for the first time from Assam.LC50 values against B. subcostatumwere: castor oil (0.404)>neem oil (1.864)>pongamia seed oil (2.201)>jatropha seed oil (5.141) after 72 hours exposure.

Ginger

Ø Powder formulation of T. harzianumAAU-MC2: Rhizome treatment (@ 20 g kg-1+basal application) found suitable for the management of ginger rhizome rot.

Vegetables

Ø Evaluation of BIPM practices against sucking pests and fruit flies showed reduction in fruit damage by 58.85% as comparted to 51.63% in the control.Three sprays of Verticiliumlacanni 1x108cfu@ 5ml/lit of water was effective in reducing the aphid (Aphis craccivora) population upto 78.28% with a B:C of 1.74.BIPM against fruit flies Bactrocera spp. with B:C ratio 2.86.

Palm

Ø Evaluation of new coconut hybrids of location specific cross combinations revealed the highest nut yield (97.6 nuts/palm/year) was recorded in AGT x PHOT.

Cocoa

Ø The highest plant height, stem girth, jorquette height, plant spread (E-W and N-S) and canopy area (14.54 m2) were recorded in VTLC-20.

Flowers

Ø Application of split doses of N:P:K @ 30:25:10 g/m2 in gladiolus significantly increased the corm weight and corm diameter.Three sprays of Tebuconazole 23% EC (0.5ml/l) or Difenoconazole (0.5ml/l) at 10 days interval recorded less infection of Alternaria blight in Marigold.Four sprays of Pyraclostrobin 20% WG (1g/ l) or Difenoconazole 25% EC (0.5 ml/l) at 10 days interval effectively controlled Alternaria blight in Gerbera.Three sprays of Azoxystrobin (0.03%) or Difenoconazole (0.05%) at 10 days interval exhibited the highest control of leaf spot/blight in Tuberose.

Spices

Ø Panniyur-1 registered highest fresh berry yield (2.85 kg/plant) and dry berry yield (1.048 kg/plant).Rhizomes treated with Tebuconazole @ 1ml/l + Imidacloprid @ 0.5 ml/l for 30 mins) exhibited lowest incidence of rhizome rot.

PFDC

Ø Developed a technology on micro irrigation of Rabi Onion i.e. application of 70 ml water per plant per day along with 260 kg/ha water soluble fertilizer (19:19:19) in five equal splits at 20 days interval up to 100 days after transplanting and rest 20 kg urea/ha as basal dose.

Agroforestry system

Ø Locally collected and raised of Gmelina arborea (& AAU 16) recorded 29.13 m and 27.15 m tree height and 49.99 cm and 51.48 cm dbh respectively.Maximum increment of Gmelina arborea tree height (371%), collar girth (298%) and canopy diameter (257%) recorded in Green Gram-Toria sequence as Intercrop.

Natural Farming

Ø Established a bio input production unit at ICR farm, AAU, Jorhat under the project Establishment of Natural Farming and Organic Agriculture under R & D sponsored by Government of Assam.

Honeybee research

Ø The infestation of small hive beetle (Aethinatumida) was reported for the first time in Assam in hives of Apis cerana colonies in Jorhat and Goalpara districts.Foliar application of SA had no significant effect on the foraging time of bee pollinators, including Apis cerana, Apis dorsata and Tetragonulairidipennis during flowering stages of rapeseed. 

Soil Arthropod pests

Ø Soil drenching of clothianidin 50 WDG @ 250 g/ha (125g a.i./ha or 1g/2lit of water) at 35-40 days after planting was found effective for managing white grubs in Colocasia.

Agril. Acarology

Ø Azadirachtin was found to be superior to the other oils in terms of litchi mite control (86.56%), fruit yield (24.80 kg/plant).Some phoratic mites were found to feed on the bottom board debris, which is a new record from Assam.

Biofertilizer

Ø Commercialized the liquid formulations of Azotobacter Biofertilizer, Azotobacter based consortia, Azospirillum Biofertilizer, Azospirillum based consortia, Rhizobium Biofertilizer, Rhizobium based consortia, Phosphate Solubilizing Biofertilizer, Potassium Solubilizing Biofertilizer and Zinc Solubilizing Biofertilizer.

Integrated Farming System research

Ø Integrated Farming System (IFS) model for 1.0 ha area under rainfed condition with crop (Field + Hort.) + Cattle+ Fishery + Poultry+ Duckery + Goatery + Apiary along with supplementary components (Liquid manure, Vermi-composting and Bio-gas unit) is designed, tested and validated to support a farm family of 5 members. Long-term (36 years) study revealed a negative NPK balance in case of reduced doses of RDF (Recommended Doses of Fertilizer) treatments as well as in control and farmers practice treatment. Raised and sunken bed technique - a land configuration specially designed by cutting and filling method for low laying areas) could help in proper utilization of the area throughout the year.

Soil Micronutrient Research

Ø RDF of NPK ( 30:40:20 kg ha-1) + application of Boron as basal @ 1.5 kg ha-1 and two foliar sprays of 0.50 % ZnSO4.7H2O at 25 and 45 days after sowing in French bean recorded the highest yield. Zinc application in kharif maize (RDF of NPK (60:40:40 kg ha-1) + soil application of Zn @ 2.5 kg ha-1 with three foliar application of 0.50% ZnSO4.7H2O at knee high, tasseling and silking stage) gives highest yield.

Vertebrate pest management

Ø The use of self-moving mechanical Drive Away Bird has shown encouraging results by giving higher yield of summer rice. The crops grown inside the solar fencing (AGRI-SOLAR) gave significantly higher yield. Spraying of ecodon (1:20) on bunds at maximum tillering(MT) stage+ zinc phosphide baiting at panicle initiation(PI) stage+ bamboo traps (50 traps/ha) at maturity stage ) recorded the highest reduction in rodent population in Kharif rice.

Farm machinery and implement

Ø Mat type nursery making machine is a reliable machine run on electricity which ensures uniform and better quality mat. Nursery for 1ha of paddy planting can be finished in 1 hour.By using topographic survey and laser leveler, paddy field check dam density can be reduced from 2320 m/ha to 1523 m/ha.

Soil Test based Crop Response STCR

Ø Conducted OFTs on Fertilizer Prescription Equations on Hybrid maize in 5KVKs of Assam and conducted verification trials on winter rice, Numali at Danichapari, Dergaon, Golaghat, Assam

Mushroom research

Ø Two hybrid mushroom strains were developed through hybridization technique for improved quality and yield. Research was initiated to improve qualitative properties of oyster mushroom (Pleurotus ostreatus) through gamma irradiation.

Nematodes in agriculture

Ø Two hot spots of Meloidogyne graminicola was identified at Nagajurigaon (26.6797 & 93.4035), Naojan Block, Golaghat district. Seven hot spot locations of Meloidogyne incognita in vegetable crops were identified.

Community Sciences

Ø Thirty two numbers of Nutri-Gardens were established in different blocks of Jorhat and Golaghat district. Altogether 20 numbers of millet based standard food recipe were prepared under Shree Anna Gram programme

Agril. Engineering

Ø A patent on “Natural draft gas fired tea dryer for small tea growers” is granted in 2024and also developed a Pedal operated Roselle deseeder along with development of optimized process for BorThekera (Garcinia Pedunculta).

GI obtained

1. Joha Rice of Assam (Type: Agricultural goods  and Application No. 439)

2. Kaji Nemu of Assam (Type: Agricultural goods  and Application No. 609)

3. Chokuwa Rice of Assam (Type: Agricultural goods  and Application No. 572)

4. Judima (Type: Manufactured goods  and Application No. 643)

4. Gamosa of Assam (Type: Handicraft goods  and Application No. 594)

Official launching of premium quality AAU-select products on Online Network for Digital Commerce (ONDC)

Initial assortment for debut launch-

Ø Labanya- A purple rice variety

Ø Zivakrit-NPK- A biofertilizer consortium

Ø AAU-Bioguard- A plant immuno-booster

Ø Natural fabric dye

Ø Black tea        

Ø Masala chai           

Ø Elaichi tea            

Ø Green tea

Ø Citronella oil

Ø Lemon grass oil

Ø Zeugo Lure- A fruit fly lure 

RESEARCH PAPERS IN PEER REVIEWED JOURNALS ((NAAS RATING/IMPACT FACTOR MORE THAN 6.0) DURING 2024-25

1.V. Rakesh, Pulin Patgiri , Abhijit Borah, D. Nandhini, Inee Gogoi. 2024.Comparative study on the repellency and chemical profiles of different chilli peppers formulations against Sitophilus oryzae (L.) (Coleoptera: Curculionidae) in stored wheat. Journal of Stored Products Research106 :102312.106:102312. (NAAS rating 8.8)

2.Ganesh, B. M., Saikia, D. K., &Borkakati, R. N.2024.Weather parametric impactions and relative abundance of tephritid fruit flies associated with cucumber. Agriculture Association of Textile Chemical and Critical Reviews Journal, 12(4), 281–285. (NAAS rating 6.0)

3.Nidhishee, R. and Deka, N.2024.Agricultural Performance Across Assam:Examining the Interplay of Cropping Intensity, Irrigation and Productivity.Indian Journal of Economics and Development vol 20(4).(NAAS rating 6.2)

4.Choudhury, K., Sarma, C. K., Barua, P., Baro, B., Bharali, P., and Enghipi, P.2024.Suitability Classification for Construction of Rainwater Harvesting System by using Geospatial Techniques in Lumbajong and Langsomepi Watersheds of Karbi Anglong District of Assam, India.AMA, Agricultural Mechanization in Asia, Africa and Latin America 55 (4): 17585 – 17601. (NAAS rating 6.25)

5.Pradhan,A.,Dixit, A., Sonkar,A., and Talukdar,L.2024.Influence of rain and wind dynamics on lodging of rice (Oryza sativa) varieties under rainfed agro-ecology.Indian Journal of Agricultural Sciences .94(12):1293-1298,DOI:https://doi.org/10.56093/ijas.v94i12.152340.(NAAS rating 6.3)

6.Didawat, R.K., Sharma,V.K., Nath, D.J., Kumar, S., Dey,A., Kumar,P., Shankar.,  chopra, I., Shivay,Y., Parihar,C. and prasad, S.2024.Impact of long-term integrated nutrient management on productivity,profitability, soil microbial activity and nutrient content ofrice (Oryza sativa) in Assam. The Indian Journal of Agricultural Sciences 94(11): 1240-1245.https://doi.org/10.56093/ijas.v94i11.151835.(NAAS rating 6.4)

7.S. Debnath, S. Jalawadi, S. Swain, P. Modi, A.R.Mendhe, B.Deka, P.Manju, G.Ramanadam, A.Panda, S.Uma, P.Devi, S.Gutam and P.Patil.2024.Low-cost Farmers’ friendly technology for propagation of banana: A strategic seed system approach for banana cultivation in India.Fruits 79(1): 1-16.DOI: https://doi.org/10.17660/th2024/003.(NAAS rating 6.4)

8.Das, D., Kalita, S., Kurmi, K., Gogoi Bhabesh, Das, R., Chauhan, M.K. and K. Pathak. 2024.Agronomic efficiency and productivity of transplanted kharif rice (Oryza sativa) as influenced by fertilizer briquettes.Indian Journal of Agricultural Sciences .94 (3): 318–320, https://doi.org/10.56093/ijas.v94i3.144550. (NAAS rating 6.4)

9.Bora, P., Saikia, B., Rahman, M., Ahmed, S.S., Chetia, R., Rahman, N., Nath, B.C. and Raja, W.H.2024.Enhancing the performance of chilli (Capsicum annuum) through twin role of plant growth promotion and disease suppression via Bacillus subtilis-based bioformulation.Indian Journal of Agricultural Sciences. 94(1): 039–043.https://doi.org/10.56093/ijas.v94i1.142692.(NAAS rating 6.4)

10.Boruah B., Deka S.D., Sharma P., Gogoi S., Sarmah B. and Nath P.D.2024.Impact of physio-biochemical responses on amelioration of short-term storage and management of post-harvest seed quality of greengram (Vigna radiata). Indian Journal of Agricultural Sciences. 94( 6): 626–631.https://doi.org/10.56093/ijas.v94i6.144484. (NAAS rating 6.4)

11.Borgohain, U., Deka, M. K., Rajkhowa, A., Brahma, D., & Karthik, R.2024.Evaluation of Some Pollen Substitutes on Productivity of Honey bee Colonies (Apis cerana F.). Journal of Experimental Agriculture International, 46(9), 796-803.10.9734/jeai/2024/v46i92876. (NAAS rating 6.5)

12.Sarma, A; Deka, .MK; and Neog, B. 2024.Species richness of Hymenopteran flower visitors in Brassica campestris var. toria in Assam, India: A comparison of five sampling methods. Animal Taxonomy and Ecology. https://doi.org/10.1556/1777.2024.11471.(NAAS rating 6.6)

13.Das B, Vardhan GSH, Borah BK, Boro RC, Sarmah BK, Baruah A, Deka Mk and Das P.2024.Gut bacteria present in Greater wax moth (Galleria mellonela L.) larvae aid in degradation of wax and other complex polymers. Journal of Pure & Applied Microbiology, 18(4). (NAAS rating 6.7)

14.Saranya, P.S., Borkataki , S., Sen, S., Deka, M.K., Devee, A., Das, K., Bhattacharyya, B., Taye, R.R., Reddy, M.D., and Nand, S.P.2024.Nest architecture of stingless bee, Tetragonula iridipennis Smith from Assam, North East India.Journal of Environmental Biology.45(5): 558-564. DOI: http://doi.org/10.22438/jeb/45/5/MRN-5221.(NAAS rating 6.7)

15.Deka, P.,Das,P., Sinki Barman, S., Saikia, P. Borah, J. Bora,S . S., Borah, D., Neog M.2024.An Evaluative Study of Cluster Frontline Demonstration (CFLD)-Pulse in Udalguri district of Assam.Legume Research.47 (12) : 2024 DOI https://doi.org/10.18805/lr-5379.(NAAS rating 6.8)

16.Hussain, S., Bordoloi, D., Choudhury, M.R.,Taye, R.R., Khan, P., Zaman, A.S.N. and Borah, S.R.2024.Analysis of Genetic Diversity in Rajmah Genotypes from the Barak Valley Zone of Assam, India.Legume Research. 1-8.doi: 10.18805/LR-5464. (NAAS rating 6.8)

17.Indrajit Barman, Arup Kumar Sarma& Budha Bora.2024.Indigenous pest management practices in rice ecosystem of Assam, India.Indian Journal of Traditional Knowledge.10.56042/ijtk.v23i12.15584.(NAAS rating 6.8)

18.Yein, D., Phukon, M., Borah, R.K., Bora, P. and Bora, B.K.2024.Interactions of Aulacophora foveicollis (Coleoptera: Chrysomelidae) haemocytes against entomopathogenic bacteria Bacillus thuringiensis. International Journal of Tropical Insect Science. 44: 2757–2765.https://doi.org/10.1007/s42690-024-01326-1.(NAAS rating 7.1)

19.Sarma A.K., Bhattacharyya, D. and Bhattacharyya, S.2024.Present status of Papaya Mealybug, Paracoccus marginatus Williams and Granara de Willink, in Assam, India, after a decade of its first invasion.Journal of Basic and Applied Zoology.10.1186/s41936-024-00387-5.(NAAS rating 7.1)

20.Majumder, S.H., Deka, N. and Mondal, B.2024.Identificationand quantification of risks associated with rice-based production system: empirical evidence from Odisha, India. Current Science, 127 (8). 970. (NAAS rating 7.17)

21.Saikia, P.P., Bhuyan, S., Kashyap, D. and Goswami, K. 2024.Market competition for imported agricultural raw materials in the Indian animal feed industry.Current Science, 126(12), 1446-1453.10.18520/cs/v126/i12/1446-1453. (NAAS rating 7.17)

22.Karthik, R.; Deka, .MK.; Ajith, S.; Kalita, S. ,. and Prakash N.B.2024.Effect of foliar application of Silicic acid on biological parameters of Lipaphis erysimi (Kaltenbach) and activity of plant defensive enzymes in rapeseed.International Journal of Tropical Insect Science.https://doi.org/10.1007/s42690-024-01363-w.(NAAS rating 7.2)

23.Diplina Yein, Mousumi Phukon , RatulKr Borah, Popy Bora and Basanta Kr. Bora. 2024.Interactions of Aulacophora foveicollis (Coleoptera: Chrysomelidae) haemocytes against entomopathogenic bacteria, Bacillus thuringiensis.International Journal of Tropical Insect Science 44(6):2757-2765.https://doi.org/10.1007/s42690-024-01326-1.(NAAS rating 7.2)

24.Bharadwaj, K., Das, K.2024. Rapid Estimation of Soil Moisture Using Spectroscopic Sensor.Communications in Soil Science and Plant Analysis, 56 (4):642-653.https://doi.org/10.1080/00103624.2024.2426642.(NAAS rating 7.3)

25.Phukon, M., Das, J., Sruthi, R., Verma, R. K., Modi, M. K., Bhattacharyya, A., & Chetia, S. K.2024.Study on submergence tolerance of rice (Oryza sativa L.) in a core panel of North-East India using GWAS. Indian Journal of Genetics and Plant Breeding, 84(02), 193–201. https://doi.org/10.31742/ISGPB.84.2.6.(NAAS rating 7.34)

26.Karthik, R.; Deka, M. K.; Ajith, S.; Kalita, P.; Prakash, N. B.2024.Impact of foliar application of silicic acid on aphid population growth, gas exchange parameters and yield of rapeseed.Phytoparasitica; 52(4): 65.10.1007/s12600-024-01183-1. (NAAS rating 7.4)

27.S. Bhuyan, D. K. Patgiri, B. K. Medhi, B. Deka, G. G. Kandali, S. Kalidas-Singh, A. Debnath, R. R. Zhiipao, T. Tsomu, S. R. Devegowda, S. J. Medhi, 2024.Prediction of Soil Quality Index (SQI) and Its Minimum Dataset Indicators for Rice-Based Cropping Systems in the North Bank Plain Zone of Assam. Eurasian Soil Science, 57: 1718–1729.https://doi.org/10.1134/S1064229324600854.(NAAS rating 7.4)

28.B Bhattacharyya; Partha P. G. Das; S Borkataki; K S Bhairavi.2024. Molluscophagy in North East India: Assessment of Nutritive Value of Four Edible Freshwater Molluscs, Journal of Aquatic Food Product Technology. https://doi.org/10.1080/10498850.2024.2371818.(NAAS rating 7.6)

29.Bharadwaj, K., Das, K.2024.Segregation of municipal solid waste based on their biodegradability using spectroscopy sensor.IEEE Sensors Letters, 8(8): 1-4.DOI: 10.1109/LSENS.2024.3427351. (NAAS rating 7.7)

30.Themuhi M. and Das D.2024.Thermal influence on the embryonic and post embryonic development of Meloidogyne graminicola. Phytoparasitica 52 (84). DOI: https://doi.org/10.1007/s12600-024-01204-z. (NAAS rating 7.8)

31.Behera, P.P., Singode, A., Bhat, B.V., Ronda, V., Borah, N., Yue, H., Verma, H., Borah, J.L., Majhi, P.K., Saharia, N. and Gogoi, L.R.2024.WAASB-based stability analysis and simultaneous selection of forage sorghum for forage yield traits. Euphytica, 220 (9), 145.https://doi.org/10.1007/s10681-024-03397-0.(NAAS rating 7.9)

32.Kausik, S., Nath, B.C.,Bhattacharyya, P.N., Kaman, P.K., Kashyap, A., Saikia, S., Chetia. R., Bora. P.,   Sarma, B. and Borah, P.K. 2024.Bioprospecting of citrus (Citrus L.) germplasms against citrus canker pathogenesis in Assam, North-East India. Plant Breeding, 143:457–468. https://doi.org/10.1111/pbr.13176.(NAAS rating 8.0)

33.Chandana, C.R., Kalita, S., Patgiri, P and Kaman, P.K.2024.Green synthesis of silver nano-insecticide from Polygonum hydropipper (Polygonaceae).Natural Product Research, 1-10.  https://doi.org/10.1080/14786419.2024.2405015. (NAAS rating 8.2)

34.Hati Boruah, J. L., Puro, K. N., Das, D. J., Gogoi, P., Gogoi, M., Biswas, A., … Baishya, R.2024.Prooxidant and anti-inflammatory potential of Garcinia xanthochymus fruit and its phytochemical characterisation by UHPLC-Q-Orbitrap HRMS.Natural Product Research. 1–11. doi:10.1080/14786419.2024.2419492. (NAAS rating 8.2)

35.Devi, O.K., k Laishram, B., Debnath, A., Doggalli, G., Ojha, N., Agrawal, S., Perveen, K., Bukhari, N.A., Pathak, K. and Dutta, S.2024.Mitigation of arsenic toxicity in rice grain through the soil-water-plant continuum.Plant, Soil and Environment 70(7): 395-406.DOI: 10.17221/470/2023-PSE. (NAAS rating 8.4)

36.Rajkumar Ramteke; Laxman Singh Rajput; Vennampally Nataraj; Shraddha Tiwari; Munmi Borah; Sanjeev Kumar; Shivakumar Maranna; Milind B. Ratnaparkhe; Saloni Man. 2024.Evaluation of soybean genotypes for resistance to collar rot (Sclerotium rolfsii) under field and glasshouse condition. Tropical Plant Pathology, 1(1), 1-11. DOI : https://doi.org/10.1007/s40858-024-00652-6. (NAAS rating 8.5)

37.Kalita, S., Deka, J., Kurmi, K., Nath, D.J., Thakuria, R.K. and Das, K.2024.Rice Equivalent Yield and Soil Properties as Influenced by Conventional and Minimum Tillage System in Rice Based Cropping Sequence in North‑East India.International Journal of Plant Production (Springer). https://doi.org/10.1007/s42106-024-00297-0.(NAAS rating 8.5)

38.HatiBoruah, J.L, Gogoi, M., Famhawite, V Barman, D, Das, D.J., Puro, N., Biswas, A., Mridha, P., Gogoi, P.,  Gajbhiye, R. and Baishya, R.2024.Phytochemical Characterization, Prooxidant, Antiproliferative and Anti-inflammatory Potential of Meyna spinosa Roxb. ex-Link Ripe Fruit.Chemistry & biodiversity. https://doi.org/10.1002/cbdv.202402342. (NAAS rating 8.9)

39.Naveen J., Kurmi K., Saikia M., Pathak K., Kumar V., Borgohain R., Srivastava A.K., Khandai S., Peramaiyan P., Kumar V., Sarmah M., Gogoi Bhabesh, Singh K., Singh S., Kundu S., Teja K.S. and Sekhar G.2024.Evaluating the Effects of Fertilizer Deep Placement on Greenhouse Gas Emissions and Nutrient Use Efficiency in Wet Direct-Seeded Rice During the Wet Season in Assam, India.Agriculture.https://doi.org/10.3390/agriculture14112061.(NAAS rating 9.3)

40.Bhattacharyya, P.N., Sandilya, S.P., Sarma, B., Pandey, A.K., Dutta, J., Mahanta, K., Lesueur, D., Nath, B.C., Borah, D.., Borgohain, D. 2024.Biochar as Soil Amendment in Climate Smart Agriculture: Opportunities, Future Prospects, and Challenges. Journal of Soil Science and Plant Nutrition.https://doi.org/10.1007/s42729-024-01629-9.(NAAS rating 9.4)

41.Kashyap, D., Bhuyan, S. and Goswami, K. 2024.An analysis of broiler poultry feed supply chains in India.Supply Chain Forum: An International Journal, 0(0), 1-14. https://doi.org/10.1080/16258312.2024.2440306.(NAAS rating 9.7)

42.Parinda Barua, Munmi Phukon, Sunita Munda, Vipin Ranga, R. Sruthi, Jyoti Lekha Borah,Janardan Das, Pompi Dutta, Ashok Bhattacharyya, Mahendra Kumar Modi, Sanjay Kumar Chetia. 2024.Identification of significant SNPs and candidate loci for blast disease resistance via GWAS and population structure analysis in ARC panel of Oryza sativa. Physiology and Molecular Biology of Plants, 30 (10),1673-1689.https://doi.org/10.1007/s12298-024-01518-6.(NAAS rating 9.7)

43.Handique, M., Bora, P., Ziogas, V., Srivastava, A.K., Jagannadham, P.T.K. and Das, A.K.2024.Phytophthora Infection Reorients the Composition of Rhizospheric Microbial Assembly in Khasi Mandarin (Citrus reticulata Blanco). Agronomy. 14: 661. https://doi.org/10.3390/agronomy14040661.(NAAS rating 9.7)

44.Parinda Barua, Munmi Phukon, Sunita Munda, Vipin Ranga, R. Sruthi, Jyoti Lekha Borah, Janardan Das, Pompi Dutta, Ashok Bhattacharyya, Mahendra Kumar Modi & Sanjay Kumar Chetia.2024.Identification of significant SNPs and candidate loci for blast disease resistance via GWAS and population structure analysis in ARC panel of Oryza sativa.  Physiol Mol Biol Plants 30, 1673–1689.https://doi.org/10.1007/s12298-024-01518-6.(NAAS rating 9.7)

45.Sinha, M.,  Kalsi, G., Saikia, J.,  Beniwal, A., Sarma, D., Gautam, S. and Moloya Gogoi.2024.Effects of germination and gamma irradiation on physico-chemical and cooking qualities of red Ahu rice landrace.Journal of Cereal Science. 120(2): 104061.doi: 10.1016/j.jcs.2024.104061. (NAAS rating 9.8)

46.Haytham Senbill , Donia Karawia, Jehan Zeb, Nouf M. Alyami, Rafa Almeer, Sahidur Rahman, Olivier Sparagano, Aiswarya Baruah. 2024.Molecular screening and genetic diversity of tick-borne pathogens associated with dogs and livestock ticks in Egypt.PLoS Negl. Trop. Dis. 18 (6): e0012185.https://doi.org/10.1371/journal.pntd.0012185.(NAAS rating 9.8)

47.I.Bhupenchandra, A.Basumatary, S.Dutta, A.Das, A.K.Choudhary, R.Lal, D.Sharma, A.Sen, Y.Prabhati, M.R. Sahoo. 2024.Repercussions of fertilization with boron and enriched organic manure on soil chemical characteristics, boron and phosphorus fractions, and French bean productivity in an acidic Inceptisol of eastern Himalaya. Scientia Horticulturae, 324 . https://doi.org/10.1016/j.scienta.2023.112589. (NAAS rating 9.9)

48.Walling, B., Borah, A., Hazarika, S., Bharali, P., Ramchandran, D., Kanagasabai, V., Dutta, N., Maadurshni, B. G., Manivannan, J., Mudoi, P., Kaman, P.K., Sorhie, V.,Gogoi, Bhaygudoy, G., Acharjee, A. S., Vishwakarma, V and Nath, P.D.2024.Production of bacterial nanocellulose as green adsorbent matrix using distillery wastes for dye removal: a combined approach for waste management and pollution mitigation.Biomass Conversion and Biorefinery, 15(5), 7265-7281. https://doi.org/10.1007/s13399-024-05561-x.(NAAS rating 10.0)

49.Boruah.G., Phukan.A.R., Kalita.B.B., Gangwar.A.K.S., Jose.S.2024.Antimicrobial and UV protection finishing of cotton fabric with copper nanoparticles synthesized using S. cumini leaf extract.Clean Technology and Environmental policy (NAAS rating 10.2)

50.Gogoi S., Singh S., Mallikarjuna Swamy B. P., Das P., Sarma D., Sarma R.N., Acharjee S. and Deka S.D.2024.Grain iron and zinc content is independent of anthocyanin accumulation in pigmented rice genotypes of Northeast region of India. Scientific reports. https://doi.org/10.1038/s41598-024-53534-x.(NAAS rating 10.6)

51.Sarma, A.K.; Damgaard, C.F.; Saikia, Mrinal and Neog, P.2024.Rapid assessment and management of outbreak of Rice Swarming Caterpillar by drone: a BIG need of the hour. Frontiers in Sustainable Food Systems, DOI: 8.10.3389/fsufs.2024.1361012. (NAAS rating 10.7)

52.Kathbaruah, S., Bhattacharyya, B., Borkataki, S., Gogoi Bhabesh, Hatibarua, P., Gogoi, S., Bhairavi, K. S.  and P. Dutta. 2024.Termite mound soil based potting media: a better approach towards sustainable agriculture.Frontiers in Microbiology.13:996220. DOI: 10.3389/fmicb.2024.1387434. (NAAS rating 11.2)

53.Prakriti Rajput, Mohammad Urfan, Shubham Sharma, Haroon Rashid Hakla, Brij Nandan, Ranjan Das, Rajib Roychowdhury, Sikander Pal Choudhary.2024. Natural variation in root traits identifies significant SNPs and candidate genes for phosphate deficiency tolerance in Zea mays L. Physiologia Plantarum, 176(3), 1-15.DOI:10.1111/ppl.14396. (NAAS rating 12.4)

54.Bodeddula Jayasankar Reddy, Shreekant M. Baradkar, Tamma V. S. S. Manogna1, Dibosh Bordoloi,Subhash C. Bihani, Nagendra Sarma Barua, Akhil Ranjan Baruah, Bikram Kishore Das, Suvendu Mondal and Debojit Sarma. 2024.A single-base deletion in exon 2of Hd1 delineates monogenic recessive photo period insensitivity in aromatic Joha rice:a novel allele for seasonal adaptability.Biological Research 57:94.Doi: https://doi.org/10.1186/s40659-024-00553-7.(NAAS rating 12.7)

55.Gogoi Bhabesh, R. Das, DJ Nath, S Dutta, MBorah, L Talukdar, DK Patgiri, K Pathak, D Valente, I Petrosillo, N Borah. 2024.Long-term management of rice agroecosystem towards climate change mitigation. Ecological Indicators. https://doi.org/10.1016/j.ecolind.2024.111876.(NAAS rating 12.9)

56.A.K. Shukla, S.K. Behera, A. Basumatary, I Sarangthem, R. Mishra, S. Dutt, Y. Sikaniya, A. Sikarwar, V Shukla, S.2024.PCA and fuzzy clustering-based delineation of soil nutrient (S, B, Zn, Mn, Fe, and Cu) management zones of sub-tropical Northeastern India for precision nutrient management. Journal of Environmental Management, 365, 121511. https://doi.org/10.1016/j.jenvman.2024.121511.(NAAS rating 14.0)

57.Kabade, P.G., Dixit, S., Singh, U.M., Alam, S., Bhosale, S., Kumar, S., Singh, S.K., Badri, J., Varma, N.R.G., Chetia, S. and Singh, R.2024.SpeedFlower: a comprehensive speed breeding protocol for indica and japonica rice. Plant Biotechnology Journal, 22(5): 1051-1066 (NAAS rating 19.8)

58.K. Pathak, P. Neog, K. Medhi, R.L. Deka, K. Sarmah, K. Kurmi, S.K. Bal and A. Sultana. 2025.Impact of modified microclimate on the performance of Green gram (Vigna radiata L.) under different planting systems in the Upper Brahmaputra Valley zone of Assam.Journal of Environmental Biology 46, 308-317. http://doi.org/10.22438/jeb/46/2/MRN-5358.(NAAS rating 6.6)

59.Nath, G., Bhagawati, S., Kaman, P.K., Sarmah, K., Gogoi, B., and Manpoong, N.S.2025.Changes in soil faunal pattern as influenced by novel insecticides in Assam. Journal of Environmental Biology, 46 (2):222-229. http://doi.org/10.22438/jeb/46/2/MRN-5389.(NAAS rating 6.7)

60.Gogoi.M, Gogoi.N & Bhuyan.S.2025.Gamosa: Unique symbol of Assamese culture.Indian Journal of traditional Knowledge 24(2).DOI:https://doi.org/10.56042/ijtk.v24i2.17210. (NAAS rating 6.7)

61.Priyajoy Kar; Romen Sharma; Shankar Lal Jat; Sapna Nigam; Zahoor Ahmed Dar; D Sravani; Devyani Sen; Nabajyoti Bhuyan; Sujay Rakhsit. 2025.Tracking the emergence and usage of farmer led innovations (FLIs) in maize ecosystem: A pan India exploration.Indian Journal of Traditional Knowledge (IJTK), 24(2), 177-184.DOI: DOI:10.56042/ijtk.v24i2.17209. (NAAS rating 6.7)

62.Gayatri Goswami Kandali, Anjali Basumatary, Samiron Dutta, Mahima Begum, Sanjib Kumar Behera, Anshuman Bordoloi, and Trishna Sarmaha. 2025.Combined application of soil and foliar application of zinc enhanced the productivity and quality of maize grown in acidic inceptisols.Journal of Plant Nutrition, 1–17 . https://doi.org/10.1080/01904167.2025.2479760. (NAAS rating 7.6)

63.Gogoi J., Deka S.D., Sharma P. Borah P., Das R., Gogoi S. and Nath P.D.2025.Seed priming with nanoparticles enhances the physio-biochemical traits of Oryza sativa L. and reduces aflatoxins production.Seed science and technology.https://doi.org/10.15258/sst.2025.53.1.07.(NAAS rating 7.7)

64.V. Senpakapriya, Jonali Goswami, Debashree Battacharjee, Ranjan Das, K. K. Sarma, S. P. Aggarwal. 2025.Geospatial Insights for Assessing Agricultural Drought Hazards of Rabi Season in Assam.Journal of the Indian Society of Remote Sensing,.DOI:10.1007/s12524-024-02092-w. (NAAS rating 8.2)

65.Chisty.P.B., Hayauadan.J., Bhuyan.S., Kumar.C.R,Srinivasulu.K., Prakash.C .2025.Thermo-physiological comfort properties of Neem Herbal Extract finished Synthetic fabric. Fibers and Polymers.DOI: https://doi.org/10.1007/s12221-025-00872-w.(NAAS rating 8.2)

66.Borah, J.L., Tampha, S., Jose, R.C., Chaudhary, S.K., Chetia, S.K., Tamuly, A., Sharma, N., Mukherjee, P.K. and Bhardwaj, P.K.2025.A Validated Method for Identification and Quantification of Anthocyanins in Different Black Rice (Oryza sativa L.) Varieties Using High Performance Thin-Layer Chromatography (HPTLC).Phytochemical Analysis, https://doi.org/10.1002/pca.3510. (NAAS rating 9.0)

67.Laxman Singh Rajput; Mohammad Samio Shaikh; Munmi Borah; Sanjeev Kumar; Vennampally Nataraj; Maranna Shivakumar; Hemant Singh Maheshwari; Kriti Pathak; Aman G.2025.Evaluation of Combination Fungicides for Charcoal Rot and Collar Rot Management in Soybean, Agronomy MDPI, 15(3), 529-47, https://doi.org/10.3390/agronomy15030528. (NAAS rating 9.73)

68.Mahender Anumalla, Apurva Khanna, Margaret Catolos, Joie Ramos, Ma Teresa Sta. Cruz, Challa Venkateshwarlu, Jaswanth Konijerla, Sharat Kumar Pradhan, Sushanta Kumar Dash, Yater Das, Dhiren Chowdhury, Sanjay Kumar Chetia, Janardan Das, Phuleswar Nath, Girija Rani Merugumala, Bidhan Roy, Navin Pradhan, Monoranjan Jana, Indrani Dana, Suman Debnath, Anirban Nath, Suresh Prasad Singh, Khandakar Md Iftekharuddaula, Sharmistha  Ghosal, Mohammad Ali, Sakina Khanam, Md Mizan Ul Islam, Muhiuddin Faruquee, Hosna Jannat Tonny, Md Rokebul Hasan, Anisar Rahman, Jauhar Ali, Pallavi Sinha, Vikas Kumar Singh , Mohammad Rafiqul Islam, Sankalp Bhosale, Ajay Kohli, Hans Bhardwaj, and Waseem Hussain.2025.Future flooding tolerant rice germplasm: resilience afforded beyond Sub1A gene.The Plant Genome, doi: https://doi.org/10.1101/2025.02.24.639789 .(NAAS rating 9.9)

69.Baruah, A., Bora, P., Damodaran, T., Saikia, B., Manoharan, M., Kumari, S.2025.Patho-Ecological distribution and Genetic Diversity of Fusarium oxysporum f.sp. cubense in Malbhog Banana Belts in Assam, India.Journal of Fungi. 11(3): 195.https://doi.org/10.3390/jof11030195.(NAAS rating 10.2)

70.Baruah, A., Bora, P., Damodaran, T., Saikai, B., Manoharan, M., Patil, P., Bhattacharyya, A., Saikia, A., Kumar, A., Kumari, S., Talukdar, J., Dey, U., Ahmed, S.S., Rahman, N., Nath, B.C., Tabing, R. and Kumar, S. 2025.Patho-Ecological Distribution and Genetic Diversity of Fusarium oxysporum f. sp. cubense in Malbhog Banana belts of Assam, India.Journal of Fungi, 11, 195, https://doi.org/10.3390/jof11030195.(NAAS rating 10.2)

71.Mahawar, S., Pant, U., Angirekula, U.B., Tomar, M., Uchoi, J., Bansal, S., Bollinedi, H., Dubey, A.K., Kakoti, R. K., Thirugnanavel, A., Bhardwaj, R., Malik, S.K., and Riar, A.2025.Decoding citrus diversity: Insights from multivariate data analysis of nutritional and antioxidant profiles in diverse species and hybrids .Applied Food Research 5 (2025) 100858,DOI:10.55362/IJE/2023/3957.(NAAS rating 10.5)

72.Parihar, A.K., Hazra, K.K., Lamichaney, A., Gupta, D.S., Singh, A.K., Dev, J., Jaberson, S., Lone, A.A., Das, S.P., Bindra, S., Panwar, R.K., Kumar, A., Das, A., Borah, H.K., and Dixit, GP. 2025.Eco-phenological drivers of black gram (Vigna mungo (L) Hepper) productivity in diverse environments and their implications for crop improvement.  Field Crops Research. 2025.https//doi.org/10.1016/j.fcr.2025. 109756.(NAAS rating 11.6)

73.Parihar, A.K., Hazra, K.K., Lamichaney, A., Gupta, D.S., Kumar, J., Singh, A.K., Mishra, R.K., das, S.P., Sofi, P.A., Lone, A.A., Rai, G., Borah, H.K., and Dixit, GP. 2025.Spatial vibration and adaptive responses of tall-type field peas (Pisam sativum L.) across Indian subcontinent. Plant, Cell & Environment. 2025, 1-17, https//doi.org/10.1111/pce. 15450.(NAAS rating 12.0)

Salient Research Achievements (2025-26)

·         For genetic improvement of rice, a few QTLs associated with drought tolerance, and new crosses attempted to introgress QTLs for both biotic and abiotic stress tolerance and SNP based genotyping and phenotyping of ARAM panel for abiotic and biotic stress tolerance has been initiated

·         Identified and functionally characterized acid tolerance genes (Na⁺/H⁺antiporter, nahC, cysW, and a hypothetical protein gene) in Priestiamegaterium G18 through targeted mutagenesis. The proC gene from P. megaterium is being validated for its role inconferring acid tolerance in plants, with CRISPR/Cas-based constructs, successfully transformed into Agrobacterium, followed by completed Agrobacterium-mediated transformation into Nicotiana tabacum.

·         Technology on application of instant mixture of 5.0 kg Zinc ha^-1 (ZnSO₄.7H₂O 24.0 kg ha^-1 ), 1.5 kg Boron ha^-1 (Borax 13.0 kg ha^-1 ) and recommended dose of N: P2O5:K2O ( 20:10:10 kg ha^-1 ) with 1.0 t ha^-1 of Vermicompost in Scented Rice has been recommended

·         Significantly highest filled grains per panicle (240.9 No.) & Seed yield (5017 kg/ha) is recorded in treatment (RDF 75% + Vermicompost@1 t/ha) instant mixture + Panchagavya 3% as Foliar Spray at 30 DAT) in soil after harvest of rice.

·         HDPE bags performed better in maintaining lower seed moisture, which is important for maintaining seed quality and viability during storage

·         Dry seeding treatment of oat seeds recorded the lowest fodder yield (124.75 g/plant), while seed soaking in water @1: 1.5 @ 20⁰ C overnight improved fodder yield (134.13 g/plant) compared with dry seeding. Moreover, GA₃ @ 200 ppm treatment recorded the highest fodder yield per plant (143.50 g/plant) as Gibberellic acid (GA₃) stimulates cell elongation, faster germination, and enhanced vegetative growth, which results in increased plant height and higher fodder biomass.

·         A total of twenty weed species is documented and identified from different parts paddy field of AAU-ICR farm, of which, Cyperus spp. is found as dominant and a total of five different species of Cyperus is recorded.

·         Seed treatment with T. harzianum (Th) @ 10g/Kg + Root dip treatment with Th @ 10g/litre + Foliar spray with Th @ 2g/litre at 70 and 80 days after transplanting significantly reduced the sheath rot incidence and severity of rice.

·         Spraying of 3% ‘Panchagavya’ and 10% Vermiwash recorded lowest the dead heart (2.98 %) after first spray at 25 DAT and 2.65% deadheart after 2^nd spray against 8.55% and 5.60 % in control respectively.

·         Spraying of Pongamia oil @ 3ml/l of water at 20-25 days after transplanting followed by 2-3 sprays at 10 days interval is effective in managing rice stem borer population which resulted in 36.25 % increase of yield (4.52 t/ha) over control (3.32 /ha) with C:B=1:1.78

·         Seed Treatment 50ml/kg + Seedling Root dip Treatment with Vermipower@50ml/litre for 30 minutes + foliar spray with Vermipower @50ml/litre at 30 DAT and 60 DAT was found effective in management of sheath blight disease of rice.

·         Lowest disease severity of sheath blight of rice (16.46%) with highest yield (4.02 ton/ha) was observed in plant treated with Propiconazole @1% followed by seed treatment with Beejamrit @ 5% + Foliar spray with Bioveer (Trichoderma based bioformulation) @ 2%with disease severity (23.19%) and yield (3.81 ton/ha).

·         Neutral silica @ 3500 ppm recorded germination of 88.67 per cent at 3 months and 87.67 per cent at 6 months, which was higher than untreated seeds of rice (71.67 % at 6 months).

·         Broflanilide 300 SC and dinotefuran 20 SG treatments effectively maintained seed viability during storage.

·         Application of  Zinc @ 2.5 kg ha^-1  (Zinc Sulphate Heptahydrate or ZnSO₄.7H₂O @12 kg ha^-1) along with the recommended dose of NPK (60:40:40 kg ha^-1 and three foliar spray of 0.50 % ZnSO₄.7H₂O (3 kg ZnSO₄.7H₂O in 600 litre water ha^-1 per spray) at Knee high, Tasseling and Silking stage has been recommended for Assam.

·         For the late kharif season (upto 1^st fortnight of October), a black gram variety SBC-50 has been released and recommended

·         Significantly highest (33.50 q/ha) Blackgram Equivalent Yield (BEY) of the blackgram-rajmah cropping system & B:C ratio (2.28) is observed in treatment (75% RDN+2 Foliar Spray 0.4% Nano Urea (Pre-flowering & Pod initiation) + 100% RDPK) and lowest is observed in absolute control (20.85 q/ha & 1.51).

·         Significantly highest branches per plant (5.0), pods per plant (13.4) and seed yield (15.11 q/ha) rajmah were recorded in 75% RDP + 2 foliar sprays of 0.4% Nano DAP (25-30 & 55-60 DAS) + 100% RDNK of Rajmah and lowest was observed in absolute control.

·         NSKE @ 5% followed by and Two sprays of SL-NPV(T5) were the most effective insecticides for managing S. litura in urdbean.

·         Post-emergence application of propaquizafop 2.5% + imazethapyr 3.75% w/w ME @ 125 g a.i./ha at 15-20 days after sowing (DAS) controlled the weeds effectively (73.4 % and 68.8 % WCE at 25 and 45 DAS, respectively) in mungbean and thus, led to realize 75.1 % yield increase over weedy check.

·         75% NPKZn + soil application of NPKZn microbial consortia (2 kg/ha) fortified FYM @100 kg/ha resulted in the highest yield (993.71 kg/ha) with B:C ratio of 2.45.

·         75% RD of NPKZn + seed inoculation with NPKZn microbial consortia @ 50g per kg + NPK (19:19:19) @ 2% at pre-flowering and pod initiation stages resulted in the highest yield (1116.02 kg/ha) with B:C ratio of 2.52 in greengram and in blackgram 1245.84 kg/ha and B:C ratio of 3.06

·         All the weather parameters except BSSH were negatively correlated with the web blight disease incidence in both mungbean and urdbean. However, only minimum temperature, morning RH, evening RH and rainfall were found highly significantly negatively correlated with the disease incidence except rainy days in case of mungbean.

·         Growing two (2) rows of sesame as barrier crop and timely weeding along with installation of yellow sticky trap (30cm x 20cm) @ 30 nos./ha at 30 days after sowing followed by spraying with neem formulation (Azadirachtin 300 ppm) @ 5ml/l of water at vegetative stage against major insect pests of mungbean.

·         Altogether nine novel insecticides were evaluated against flower thrips and whitefly in summer mungbean (var. SGC-20). All the tested insecticides significantly reduced insect pest population and howvere, highest ICBR ratio of 13.08 was observed in Pyriproxyfen 10 EC and 14.62 (Pymetrozine 50 WG) in contrast to (Cyantraniliprole 10.26 OD) of 2.89.

·         Chlorantraniliprole 18.5 SC (40 ml/acre) and thiodicarb 75 WP (250 g/acre) were the most effective insecticides for managing pod borer in mungbean

·         Neem oil @20 ml/kg seed was found to be the most effective with 19.96 % damage of pulse beetle under storage.

·         2-3 sprays of Pongamia Oil (3 ml/lt) is effective in managing aphid population (64.93%) in rajmah which resulted in 12.56% increase of yield (1721 kg/ha) over control (1529 kg/ha) with C:B=1:2.75

·         Seed Treatment (ST) and Soil Drenching (SD) with Tebuconazole 50%+Trifloxystrobin 25% WG at 30 DAS @ 1gm/ litre water can reduce the collar rot incidence (17.24%) and yield (16.22 q/ha) with B:C=2.04 in Rajmah.

·         The lowest disease incidence and highest yield were recorded in chemical treatment (Vita-vax powder @ 0.2%) followed by treatment with biopesticide, AAU-Bioveer and Trichoderma (GBPUAT, Pantnagar).

·         Seed dressing of lentil seed with Tebuconazole showed the highest mycelial inhibition over control (86.29%) followed by Pyraclostrobin + Metiram with 85.92% mycelial inhibition in single dose.

·         Research on genetic improvement of grain legumes using gene technology to protect against insect pests led to field trails of 6 events of Bt chickpea expressing lines either Cry1Ac orCry2Aa after receiving permission from RCGM to conduct event selection trials. Information on flanking sequences of Cry1Ac is made available for Event ID using whole genome sequencing by Nanopore and developed a new binary vector for expression of Vip3Aa gene in chickpea.

·         The paired row planting recorded higher seed yield of chickpea as compared to normal row planting.

·         The integration of band placement of 50% RDF along with bio-fertilizers seed treatment and foliar ‘P’ boosting @ 2% DAP at flowering and pod filling stages resulted in highest seed yield of chickpea which was closely followed by band placement of 50% RDF with bio-fertilizers seed treatment and band placement of 60% RDF.

·         A study on transcriptional reprogramming in plastids of pigeon pea induced due to simulated herbivory and after 12 hours of simulated herbivory, ICPL-332 showed 1,628 upregulated and 2,121 downregulated genes, while ICPL-87 had 562 upregulated and 834 downregulated genes.  A total of 2,309 genes were commonly expressed in both, with 76 exclusives to ICPL-332 and 88 to ICPL-87.

·         Seed treatment of Rhizobium-PSB consortia@ 50 g/kg seed, FYM @ 2t/h and foliar spray with 0.5 % 19:19:19 graded NPK at pre-flowering stage and pod initiation stage of Horse gram. This technology is in pipe line for technology recommendation.

·         Trichoderma asperellum ST was found most effective in field emergence of 84.33% followed by Herbal Kunapjal ST (83.67).

·         Application of Salicyclic acid @ 200 ppm during 50% flowering and silliqua formation stage mitigate the soil moisture stress and yield advantage 15-27 %.

·         Irrigation water management in late sown Toria with micro-sprinkler irrigation system has been recommended

·         Grow coriander as companion crop with rapeseed-mustard in a 1:4 ratio can serve as an eco-friendly strategy to suppress mustard aphid infestation in endemic areas.

·         Seed treatment with T. harzianum based bioformulation (AAU product – Biozium) @ 10 g / kg + foliar spray with Biozium @ 6 g/l at 60 and 75 DAS reduced the Alternaria blight severity by 36.8 % on leaves and 33.2 % on pods and thus, led to realize 47.0 % yield increase over control.

·         Spraying of Lecanicillium lecanii (AAU-J culture) (10⁷spore/g) @ 5ml/L or Beauveria bassiana (AAU-J culture) (10⁸spore/g) @ 5g/L at the time of first occurrence of the pest followed by second spraying at 15-20 days after first spray is effective for managing mustard aphid in toria has been recommended

·         Apply N @ 30Kg/Ha, P@ 20Kg/ha,K@20kg/ha,B @1.5Kg/ha,Zn @10.5 Kg/ha as basal along with FYM @3t/ha and biofertilizer @ 50gm /kg seed as seed treatment (Azospirillum, PSB and KSB each) in Sesame

·         Lathyrus varieties viz. JCL-21-1 (AAU Lathyrus-1), JCL-21-3 (AAU Lathyrus-2) and JCL-22-1 (AAU Lathyrus-3) and Rice bean varieties viz., JOR-21-1 and JOR-20-1(Muhita) has been approved recommended for the state of Assam

·         Jute (L) + green gram (L) (1green gram row between 2 jute rows) intercropping resulted highest jute fibre equivalent yield of 39.57 q/ha i.e. 30.85 % more than sole jute crop yield of 30.24 q/ha

·         Highest fresh weight and flax seed yield were obtained in T₇: Flax + Onion seed type (2:1)

·    Among the treatment of nutrient management in Utera linseed cultivation revealed that the treatment with 25% of 40:20:10: NPK kg/ha recorded significantly higher plant population/ha, no. of capsule/plant, which was at par with N₄ treatment (100% RDF + 2% urea & KNO₃ spray at FI & CD stage).

·    Among the treatment of weed management, the treatment with Clodinafop 15 % + metsulfuron methyl 1% @4 g ai/ha) as post emergence spray at 25-30 days after sowing, recorded significantly higher seed yield (557 kg/ha) and B:C of 2.0 statistically at par with Clodinafop @60g ai/ha + Metribuzin @150 g ai/ha with seed yield (536 kg/ha) and B:C 1.9.

·    Study on Nitrogen Management in Linseed through Nano Urea supplementation revealed that 100 % N (Two Splits - 50% N as basal + 50% N as top dressing) along with two sprays of Nano-urea @ 3ml /liter each at flower initiation stage and capsule development stage showed 3.02 % increase in yield of linseed.

·         Seed treatment with Azoxystrobin 25% SC and soil application of Azoxystrobin 25% SC @ 1ml/lt. of water at 30DAS was recorded lowest disease incidence for fusarium wilt and highest seed yield (Station trial).

·         Under natural farming, autumn sugarcane intercropped with potato-cowpea sequence was found suitable giving highest cane equivalent yield (68.0 t/ha). Double row planting of sugarcane at a spacing of 60-120-60 cm was found suitable for growing intercrops.

·         Application of Ghanajeevamrit @600 kg/ha 4 or 5 times at 40 days interval produced the highest cane yield (56 t/ha) and also improved sucrose content of cane juice under natural farming condition

·         Spraying of chlorantraniliprole 18.5 SC @ 75g a.i./ha (8ml/10L of water) at 45 days after germination or initiation of symptoms of dead heart followed by 2^nd spraying after 30-45 days is effective against the borer pests of sugarcane with 70.70% reduction of borer infestation.

·         The Rose ringed parakeet, Psittacula krameria attacks sugarcane crop from the month of October and damage continues till cane maturity and harvest with 16.26 per cent cane damage. The damage was observed only in the periphery of the field in the first three - four rows.

·         Varietal recommendation of Potato for Assam includes Kufri Lalit, Kufri Jamunia and Kufri Sukhyati

·         Soil drenching with fipronil 40% + imidacloprid 40% WG @ 375 g/ha (300 g a.i./ha or 0.75 g/L of water) at 20-25 days (1^st earthing up) and 55-60 days (2^nd earthing up) after planting is effective for managing oriental army ants in potato with 82.34% reduction of tuber damage over control.

·        A weather based predictive model for the population buildup of scarab beetles in Assam depicts positive influence of mean maximum temperature, total rainfall and rainy days in population buildup of scarabaeid beetles.

·        

·       Rice- AAU-TTB-Dhan-41 (Labanya): Recommendation of promising purple Rice line AAU-TTB Dhan- 41 (Labanya) for all the zones of Assam. Purple rice variety, AAU-TTB Dhan- 41 (Labanya) exhibited 88.9% yield advantage over the existing black rice variety Manipuri Black Rice. Labanya is a pigmented rice variety with rich in nutrients like iron & zinc.

·       Rice- AAU-TTB-Dhan 45 (Arun):  AAU-TTB Dhan-45 is a drought-tolerant variety with three drought QTLs viz., qDTY1.1, qDTY2.2 and qDTY4.1. Based on the MLT performances in under six agroclimatic zones of Assam, the variety was found promising with a yield advantage of 12.4 % over the check variety Kolong

·       Rajmah- AAU-KMJ-Rajmah-1 (Uttam): The variety AAU-KMJ Rajmah- 1 exhibited 13.75% yield advantage over check, The newly developed variety possesses determinate type of growth habit and better cooking qualities as compared to the check variety, Arun

·       Rajmah- AAU-KMJ-Rajmah-2 (Anmol): The proposed variety AAU-KMJ Rajmah- 2 exhibited 13.09% yield advantage over check, The newly developed variety possesses determinate type of growth habit and better cooking qualities as compared to the check variety, Arun

·       Buckwheat- Buckwheat Lakhimpur-2 (Ghagar): Buckwheat variety Buckwheat Lakhimpur-2 recommended for UBVZ, NBPZ, CBVZ and LBVZ in Sali rice fallow with 14.9% Yield advantage over the check variety Himpriya.

·       Forage crop: Rice bean [AAU rice bean 1 (JOR-21-1)]: Good source of protein for livestock.