Relative efficacy and economics of seed treatment and newer insecticides against sucking and borer pests of summer mungbean in coastal Odisha

Abstract

The present study was undertaken to study the relative efficacy and economics of seed treatment and newer insecticides against sucking and borer pests of mungbean during summer 2015 and 2016. Seed treatment with imidacloprid 48 FS @ 5 ml/ kg seed and spraying of thiamethoxam 25 WG @ 50 g a.i./ ha was highly effective against sucking pests like whiteflies, aphids and thrips in mungbean. Seed treatment with imidacloprid 48 FS @ 5 ml/ kg seed and insecticides like indoxacarb14.5 SC @ 65g a.i./ha was highly effective against pod borers like Maruca vitrata (Geyer) in mungbean. Seed treatment with imidacloprid 48 FS @ 5 ml/ kg seed and spraying of spinosad 45 SC @ 73 g a.i./ ha was also effective against thrips and pod borers in mungbean. Seed treatment with imidacloprid 48 FS @ 5ml/kg seed and spraying of indoxacarb 14.5 SC @ 65g a.i./ha recorded highest yield (8.9 quintal/ha), highest net return over control (Rs 27,850/-) and highest B:C ratio (2.86), so a better management option for farmers as they will get higher net return and profit.