Author(s):

Mohan I Naik, Basavadarshan AV, Boraiah B and Thippaiah M

Abstract: The demand for vegetable soybean as a fresh or frozen vegetable is increasing worldwide. Successful production of vegetable soybean is hampered due to the incidence of several insect pests, particularly pod borer Helicoverpa armigera (Hubner). The pest represents a significant challenge to soybean production around the world. Through the chemical control measures are effective in combating the pest but not able to produce residue free grains. Hence, a study was taken up to estimate the loss caused by the pod borer and to evaluate the bio pesticides against it. The loss due to H.armigera in vegetable soybean varied from 38.49 to 45.04 per cent with an additional yield of 25.68 q to 37.56 q over untreated check. Among the biopesticides it was NSKE (4%) performed better followed by HaNPV. However, other bio pesticides viz. Azadiractitin (1.0%, 0.03%), Bacillus thuringiensis. Berliner and Beauveria bassiana (Bals-Criv.) Vuill. also performed better than control.

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