Vol. 17 No. 3
Evaluation of pre-mix insecticide: teflubenzuron+ alpha cypermethrin as a tool for the management of Scirtothrips dorsalis Hood, Helicoverpa armigera (Hubner) and Spodoptera litura (Fabricius) infesting chilli in red and lateritic zones of West Bengal
Author(s): P. RAI
Abstract: The bioefficacy of pre-mix formulation of teflubenzuron 75% + alpha cypermethrin 75% SC @ 30, 45, 60 and 75 g a.i. ha-1 along with few conventional insecticides were evaluated against Scirtothrips dorsalis Hood, Helicoverpa armigera (Hubner) and Spodoptera litura (Fabricius) infesting chilli under red and lateritic zone of West Bengal. Among all the concentrations of the test chemical, teflubenzuron 75% + alpha cypermethrin 75% SC @ 60 g a.i. ha-1 gave optimum results with good per cent reduction in the population of Spodoptera litura (78.82), Helicoverpa armigera (76.54) and Scirtothrips dorsalis (74.35) considering its bioefficacy against target pests, effect on the natural enemies and yield of the crop (46.17 % increase over control).
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