Abstract
The experiments were carried out at Students’ Instructional Farm of AcharyaNarendra Deva University of Agriculture & Technology, Kumarganj, Ayodhya during Kharif 2018. Among the various treatments evaluated for management of Bihar hairy caterpillar (S. obliqua), T5 (Triazophos 40 EC @ 250g a.i./ha) treated plots showed highest reduction in Bihar hairy caterpillar population of 75.85% and gave highest crop yield of 11.50q/ha followed by T4 (Lambda cyahlothrin 5 EC @ 40g a.i./ha) treated plots with 65.46% reduction and 10.90 q/ha yield. The highest income and cost-benefit ratio of Rs. 21,183/ha and 1:28.93 was obtained from T5 (Triazophos 40 EC @ 250g a.i./ha) followed by T4 (Lambda cyahlothrin 5 EC @ 40g a.i./ ha) i.e., Rs. 17,043/ha and 1:23.93. Efficacy of the remaining treatments in order to their superiority were T1 (Indoxacarb 14.5 EC @ 75g a.i./ha)>T2 (Imidacloprid 17.8 SL @ 30g a.i./ha)>T3 (Thiamethoxam 25 WG @ 40g a.i./ha)>T6 (Azadirachtin 1500 ppm @ 3ml/L) respectively.
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