Impact of Varied Insecticides and Biopesticides on the Fenugreek Aphid, Myzus persicae (Sulzer)

The field evaluation was carried out to assess the performance of eight insecticides (Dimethoate 30 EC, thiamethoxam 25 WG, imidacloprid 17.8 SL, quinalphos 25 EC) and biopesticides (NSE 5 %, Azadirachtin 1 % and L. lecanii 1.15 WP) at MPKV, Rahuri in during both 2019-20 and 2020-21. A randomized complete block design (RCBD) with an individual plot size of 2 m × 1.5 m. The interval between the foliar applications was 10 days, the first application was given after the pest incidence was noticed, with the help of a knapsack sprayer. The treatment imidacloprid 17.8 SL @ 25 g a.i. ha-1 and thiamethoxam 25 WG @ 25 g a.i. ha-1 were found to be most effective in reducing the population of fenugreek aphids, Myzus persicae (Sulzer) pursued by dimethoate 30 EC @ 300 g a.i. ha-1, and azadirachtin 1% @ 2 ml/l. The imidacloprid 17.8 SL @ 30 g a.i. ha-1and thiamethoxam 25 WG @ 25 g a.i. ha-1 treated plots obtained the highest yield of 7.44 t ha-1 and 7.27 t ha-1, respectively. The highest ICBR was recorded in the treatment of imidacloprid (1:30) and thiamethoxam (1:26) treated plots. Neonicotinoids are more effecive against aphids than other tested insecticides.