Vol. 11, Special Issue 9 (2022)

Author(s):
Nitesh Sharma, Divender Gupta and Divya Prakash Singh

Abstract:
Dipteran fruit flies belonging to family Tephritidae are a major constraint in production of cucumber in India, causing 30 to 100 percent yield losses, therefore, field trials were conducted to evaluate bioefficacy and economics of some novel molecules of insecticides for the management of fruit fly, Bactrocera spp. infesting cucumber under mid hills of Himachal Pradesh during 2017 cropping season. ƛ-cyhalothrin @ 0.004% performed best among the insecticides (17.04% infestation) followed by emamectin benzoate @ 0.002% (24.02% infestation) significantly least mean fruit infestation than control. Also maximum avoidable loss (70.69%) were recorded in ƛ-cyhalothrin followed by emamectin benzoate (67.31%) treated plots which proved effective in managing fruit flies. The highest benefit cost ratio (BCR) was recorded in ƛ-cyhalothrin (29.48:1) and was followed by malathion (4.78:1) treatment. In rynaxypyr and diflubendiamide treatments the negative BCR ratios were obtained due to very high cost of application.