Crop loss or avoidable yield loss of litchi fruit due to infestation of erinose litchi mite, Aceria litchii was estimated to be 31.11 %. This is the mean of crop loss observed during last three consecutive years study.
Fifty (50) chilli germplasms including 10 local collections were screened against the attack of Polyphagotarsonemus latus during last several years. Out of the entries only few local collections were found to be resistant against P. latus. After several years screening trial it was found that the local collections viz. Krishna, Bhekuri, Mem jolokia, Kharika, Moni and Konjolokia were found resistant against P. latus. The HOD, PBG has been informed about these germplasms for the breeding of resistant chilli varieties.
Certain eco-friendly management practices (plant oils) were evaluated against litchi mite, Aceria litchii . Among the different plant oils, neem oil (Azadirachtin 10,000 ppm) @ 3ml/l was found to be superior both in terms of mite control (78.92%) and B:C ratio of 3.08 compared to Jatropha oil , Karanj oil ,Eucalyptus oil and Castor oil.
Among the eco-friendly control measures against spider mites in brinjal, polygonum leaf extract and Azadirachtin showed on par results both in mite control (85.20% and 88.64%) and B:C ratio (2.33 and 2.00), respectively. Therefore, next to the chemical acaricide, fenazaquin either Polygonum or Azadirachtin may be considered as eco-friendly control of Tetranychus mites in brinjal crop.
Mass multiplication of the predatory mite, Neoseilus longispinosus on the prey mite Tetranychus urticae using wild amaranth as host crop was found to be best for harvesting maximum number of predatory mite after 21 days when released at 1:50 predator: prey ratio.
Biological control of Tetranychid mites in cucumber was tried using the predatory mite Neoseilus longispinosus under polyhouse condition. Results showed more than 90% mite control was achieved when predator was released at 1:30 to 1:50 predator: prey ratio.