Formerly International Journal of Basic and Applied Agricultural Research

Combined effect of entomopathogens with biorationals against Lepidopteran insect pests of greengram.

KULDEEP KUMAR DUDPURI and J. P. PURWAR
Pantnagar Journal of Research, Volume - 19, Issue - 2 ( May-August, 2021)

Published: 2021-09-01

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Abstract


Field efficacy of compatible combination of Beauveria bassiana and Bacillus thuringiensis with two botanicals, an insect growth regulator (IGR) and a chemical insecticide was tested against Spodoptera litura, Spilarctia obliqua and Maruca vitrata infesting green gram. Bacillus thuringiensis in combination with other insecticides was found more effective to combat the lepidopteran's population than B. bassiana. Study revealed that B. bassiana and B. thuringiensis in combination with chlorantraniliprole and azadirachtin showed highest reduction in the population of these lepidopterans. However, combination of B. thuringiensis with chlorantraniliprole and azadirachtin showed more effective than combination of B. bassiana with chlorantraniliprole and and azadirachtin. The combinations like B.thuringiensis+chlorantraniliprole18.5SC, B. thuringiensis + azadirachtin 10000ppm, B. bassiana + chlorantraniliprole 18.5SC and B. bassiana + azadirachtin 10000 ppm were found more effective against S. litura, S. obliqua and M. vitrata


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