Evaluation of different insecticides for management of onion thrips (Thrips tabaci Lindeman)

Abstract

A field experiment was conducted at Regional Research Station, National Horticultural Research and Development Foundation, Nashik in three consecutive years during rabi 2015-16, 2016-17 and 2017-18. The seedlings of onion variety NHRDF Red-2 were transplanted in a bed size of 3.0 x 1.20 m at 15 cm x 10 cm spacing. Randomized Block Design with 4 replications was followed. The treatments evaluated were T1 (Chlorantarniliprole @0.30 ml/L), T2 (Emamectin Benzoate @ 0.40 gm/L), T3 ([email protected] ml/ L) T4 ([email protected]/ L), T5 ([email protected]/ L) and T6 (Control). The applications were started at 30 DAT and a total of 4 sprays were given at 10 days interval. Silicon based sticker @0.5ml/L invariably mixed in each spray as sticky agent. The data on thrips population (Nymphs/plant) were counted at the inner most leaves visually with the help of hand lens on 10 plants marked randomly in each treatment at ten days interval after appearance. The application of fungicides viz. Mancozeb @2.5g/L and Carbendazim @1.0g/L were sprayed at 15 days interval alternatively in all treatments to protect the crop from diseases. All other agronomical practices were performed uniformly as per need in all the treatments.The crop was harvested after attaining the maturity. The statistical analysis data was done.