The present investigation was conducted to study the seasonal incidence of yellow stem borer, Scirpophaga incertulas Walker infesting rice and its correlation with weather parameters at MAE farm, Regional Agriculture Research Station, Karjat (M.S.), during Kharif 2019. Results revealed that intiation of yellow stem borer infestation was observed with (3.06%) dead heart, (1.72%) white ears head during the 31 st SMW (30 July -5 Aug) and 40 th SMW (1Oct -7 Oct) respectively. The maximum dead heart was recorded with (6.31± 2.57%) infestation at 37 th SMW (10 Sept-16 Sept) and white ear head with (6.81± 2.38%) infestation during 42 th SMW (15 Oct -21 Oct). Among the all-weather parameters, yellow stem borer showed non-significant positive correlation with sunshine hours (r= 0.017) while, other parameters showed non-significant negative correlation.

In order to examine the efficacy of different pesticides against major insects of tomato, a field study was determined at the Central Experimental Station, Wakawali, during rabi, 2018-2019. Four important pests were found infesting tomato including whitefly, aphid, leaf miner and fruit borer. The results revealed that Beauveria bassiana @ 5 ml lit -1 was the best treatment which was recorded minimum (3.28) mean whitefly population per three leaves followed by Azadirachtin 1% EC @ 0.002 per cent which recorded (3.32). For aphid, treatment Lecanicillium lecanii @ 5ml lit -1 was the best treatment which was recorded minimum (1.47) mean population per three leaves followed by Beauveria bassiana @ 5ml lit -1 which recorded (1.67) aphids per three leaves. Emamectin benzoate 05 SG @ 0.002 per cent was found most effective treatment for leaf miner and fruit borer which recorded lowest per cent leaf miner infestation (11.71%) and 13.10 per cent and 11.81 per cent on number and weight basis, respectively. Also Azadirachtin 1% EC @ 0.002 per cent was noticed effective against fruit borer damage which recorded 15.40 per cent on number and 13.86 per cent on weight basis.