Efficacy Testing of Different Pesticides for The Management of Major Insect Pests of Cabbage

A field experiment was conducted at Gokuleshwor, Baitadi, Nepal for the management of insect pests of cabbage using synthetic and biological pesticides; Azadirachtin, Cypermethrin, Bacillus thuringiensis var kurstaki, cow urine, Jholmol and Beauveria bassiana to control major insect of cabbage.These treatments were replicated three times in a Randomized Complete Block Design (RCBD) and the effect of different treatments on the population of major damaging insect's (cabbage butterfly, cabbage semi-looper, and cabbage aphids), number of infested plants, number of damaged leaves and number holes in leaves/plant were recorded.The highest larval populations of cabbage butterfly, cabbage aphids and cabbage semi-looper were recorded in control and lowest number was recorded in Cypermethrin.Beauveria bassiana pesticides Racer showed a lower effect than Cow urine and Jholmol in control of semi-looper population.The number of infested plants, damaged leaves and number of holes in leaves/plants were recorded lowest in Cypermethrin.Cabbage head weight and B/C ratio were found lowest in control and highest in Cypermethrin.The insecticides Azadirachtin, Mahashakti (Bacillus thuringiensis var kurstaki, Racer (Beauveria bassiana) and Jholmol would be the best alternative for the eco-friendly management of insect pests of cabbage.