Bioefficacy of some new insecticidal formulation against rice yellow stem borer (Scirpophaga incertulas Walker) and study its impact on predatory fauna
S Mondal Ghosh, Ayan Das, G Chakraborty
A field experiment was conducted at Central Research Farm, Gayeshpur, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal to evaluate the efficacy of some novel insecticidal formulation for the control of yellow stem borer in rice. Shatabdi -IET 4786, a popular cultivar considered as a test variety for the experiment. All the treatments were found significantly effective in reducing the infestation of stem borer and increasing the yield compared with control. Application of Lambda Cyhalothrin 25% w/v + Chlorpyriphos 10% w/v zw (Ladex) @ 120 ml/ha resulted by 47.57% yield increase over control and only presence of 0.76% and 1.44% dead heart and white ear head respectively in field with a cost benefit ratio by (1: 4.56), proved to be the most effective treatment for reducing the stem borer infestation similarly proved to be highly safe towards the native predatory fauna.
S Mondal Ghosh, Ayan Das, G Chakraborty. Bioefficacy of some new insecticidal formulation against rice yellow stem borer (Scirpophaga incertulas Walker) and study its impact on predatory fauna. International Journal of Ecology and Environmental Sciences. 2020; 2(4): 84-87.