author(s)
DN Kambrekar, CP Mallapur and Shivaleela Ullagaddi

abstract
Field efficacy of the combi-product comprising of Thiamethoxam 12.6%+ Lambda cyhalothrin 9.5% ZC against wheat insect pest complex was carried out at Main Agricultural Research Station, Dharwad during 2017-18 and 2018-19. The results revealed that Thiamethoxam 12.6% +Lambda Cyhalothrin 9.5% ZC at 175ml/ha and 150 ml/ha has found superior in reducing the aphids population, shoot fly incidence and dead heart caused by stem borer in wheat during both the spray schedules during both the years of investigations and remained statistically superior in containing the three insect pests occurring on wheat. Both the dosages of the insecticide recorded minimum aphid population and minimum dead hearts caused by both shoot fly in the initial stage of the crop and also the stem borer during the later crop stage. Further, the wheat grain yield (q/ha) recorded in different treatments during 2017-18 indicated maximum yield in the treatment with Thiamethoxam 12.6+ Lambda cyhalothrin 9.5% ZC @ 175 and 150 ml/ha where the yield recorded was 10.50 and 9.70 q/ha, respectively and both the treatments were found statistically on par with each other including the standard check Thiamethoxam 25% WG @ 50 ml/ha (10.0q/ha). While during 2018-19 also, maximum yield recorded with Thiamethoxam 12.6%+ Lambda cyhalothrin 9.5% ZC @ 175 (10.40 q/ha). This clearly indicates that Thiamethoxam 12.6%+ Lambda cyhalothrin 9.5% ZC @ 175 and 150ml/ha can be utilized in the management of insect pest complex in wheat for obtaining higher yields.