Efficacy of different management practices against Chilo partellus (Swinhoe) in Kharif maize in Western Uttar Pradesh

The field experiments were conducted to determine the comparative efficacy of different management practices against Chilo partellus (Swinhoe) in Kharif maize in western Uttar Pradesh. All the treatments were found significantly effective in reducing the infestation of stem borer and increasing the yield compared with control. Treatment indoxacarb 14.5 SC @ 500 ml/ha was found best with minimum per cent infestation and leaf injury followed by endosulfan 35 EC @ 1.5 lit/ha. The minimum number of dead hearts was also recorded with treatment indoxacarb 14.5 SC @ 500 ml/ha and next effective treatments were maize+cowpea (intercropping) and imidacloprid 17.8 SL @ 7 ml/kg. Treatment indoxacarb 14.5 SC @ 500 ml/ha proved highly toxic to coccinellids and spiders population while the treatment Trichogramma chilonis proved highly safe to coccinellids population. In case of spider population, the maximum population was recorded with treatment maize+cowpea (intercropping) followed by T. chilonis. The maximum grain yield obtained from the indoxacarb14.5 SC @ 500 ml/ha followed by endosulfan 35 EC @ 1.5 lit/ha and imidacloprid 17.8 SL @ 7 ml/kg.