M. K. MAHLA, VIRENDRA SINGH* , ASHOK KUMAR, K. C. AHIR, KULDEEP SHARMA AND GAURANG CHHANGANI

The present investigation on bio-efficacy of indoxacarb 10% + thiamethoxam 10% WG at different doses along with other insecticides against fruit borer was carried out at Horticulture Farm, Rajasthan College of Agriculture, MPUAT, Udaipur during the two consecutive years. Tomato seedlings of variety Dev were transplanted on 25th September and 20th September during 2016 and 2017, respectively.Among nine insecticides, indoxacarb 10% + thiamethoxam 10% WG at 1500 ml/ha was found most effective against fruit borer followed by indoxacarb 10% + thiamethoxam 10% WG at 750 ml/ha. The treatment indoxacarb 10% + thiamethoxam 10% WG at 250 ml/ ha proved least effect. All the insecticides significantly increased the yield of marketable fruits over control. The maximum yield (241.82 q; in the year 2016 and 250.70 qha-1 in the year 2017) was recorded in indoxacarb 10% + thiamethoxam 10% WG at 1500 ml/ha followed by indoxacarb 10% + thiamethoxam 10% WG at 750 ml/ha (232.50 q ha-1 in the year 2016 and 238.45 q ha-1 in the year 2017). At all doses of indoxacarb 10% + thiamethoxam 10% WG viz., 250, 400, 500, 750 and 1500 ml/ha did not cause any adverse effect on common natural enemies present in tomato ecosystem.