EVALUATING THE TOXICOLOGICAL IMPACT OF CYPERMETHRIN, INDOXACARB, BIFENTHRIN, AND LAMBDA-CYHALOTHRIN ON BREVICORYNE BRASSICAE (L.)

The purpose of this study was to evaluate how well chemical pesticides workagainst canola aphids during the winter of 2019 at The University ofAgriculture Peshawar. The treatments that were included are Indoxacarb @0.5 ml/lit, Cypermethrin @ 3ml/lit, lambda-cyhalothrin @ 1.5-2 ml/lit,Bifenthrin @ 2.5 ml/lit, and a control (tap water) were applied four timesmonthly at 7-day intervals. Aphid population data were recorded, with thehighest infestation (3.1 Aphids leaf -1) observed during the 2nd week ofNovember. Results indicated that the lowest mean infestation was caused bylambda- cyhalothrin (3.74±0.36), which was followed by bifenthrin(3.95±0.32), then indoxacarb (4.35±0.28), and then the cypermethrin(4.55±0.28). Additionally, lambda-cyhalothrin-treated plots had the highestyield of (16.00±0.49 ha-1), whereas the control group produced the lowestyield of (7.17±0.43 ha-1). Hundred percent was the highest mortality rateattained by lambda-cyhalothrin and cypermethrin after 72 hours of testing.These results suggest that further research be done on the possible adverseeffects of synthetic pesticides in order to have a better understanding of howthey affect the environment.