Vol. 11, Issue 7 (2022)

Author(s):
Sahab Singh Pippal, ML Sharma, Pavan Kumar Jatav and Prince Mahore

Abstract:
A Field study was conducted at research farm, college of agriculture, RVSKVV Gwalior (M.P.) to determine the effectiveness of eight treatments viz., Imidacloprid 17.8 SL, Thiamethoxam 25 WG, Acephate 75 SP, Acetamiprid 20 SP, Dimethoate 30 EC, Diafenthiuron 50 WP, Spinosad 45 SC, and Control (water spray) against mustard aphid during rabi season 2019-20 & 2020-21. The observations were taken at 1^st day before and 3^rd, 7^th and 14^th days after spray of insecticides. The results obtained on the basis average of two years, data indicate significant difference among insecticides Imidacloprid 17.8 SL was the most effective among the seven insecticides showing the minimum numbers of aphid population followed by Thiamethoxam, Dimethoate. Whereas, Spinosad was least effective followed by Diafenthiuron. The highest seed yield of 1038 kg/ha was recorded in Imidacloprid, which was significantly higher than the rest of the treatment followed by Thiamethoxam and Dimethoate. Whereas, the lowest seed yield of 397 kg/ha was recorded in the untreated plot, which was found significantly less than recorded in the rest of the treatments, followed by Spinosad. The highest cost-benefit ratio with highest net return was obtained from Imidacloprid (1:18.56). Whereas, lowest cost-benefit ratio was obtained from Spinosad (1:2.06). So these newer insecticides could be used in mustard ecosystem to control mustard aphid.