Work

Study of Different Levels of Chlorantraniliprole 10%+Thiamethoxam 20% Mixture Against Major Insect-pests of Tomato

Year: 2016

Type: article

Abstract: Experiments were conducted at Bidhan Chandra Krishi Viswavidyalaya, Kalyani, West Bengal, India to evaluate the efficacy of chlorantraniliprole 10%+thiamethoxam 20% @ 105, 128 and 150 g a.i.ha -1 along with other insecticides against major pests of tomato under field condition.Tomato crop was raised in Randomized Block Design during 2010-11 and 2011-12 crop seasons.One soil drench application of all the treatments was given at 10 days after transplanting @ 100 ml water plant -1 except λ-cyhalothrin 5 EC that was given as foliar spray at the same time with three replications.Observations of white fly, leaf miner and fruit borer were taken on 5 th , 10 th , 15 th , 20 th and 30 th days after soil drench application.Yield was recorded separately for each treatment during both the seasons.The per cent reduction or increase (+) of parasitoids (Encarsia sp. and Apanteles sp.) were recorded only on 30 th day after application.Results revealed that chlorantraniliprole 10%+thiamethoxam 20% mixture @ 150 g a.i.ha -1 gave excellent control of the two sucking pests, viz.leaf miner (5.09 and 5.75%) and white fly (0.50 and 0.41 scale) as well as of Helicoverpa armigera (0.46 and 0.61 larvae plant -1 ) for both the seasons.The yield increases were also significantly higher in Chlorantraniliprole 10%+thiamethoxam 20% mixture treatments as well as it showed remarkable specificity to two important natural enemies associated with tomato ecosystem.Tomato, chlorantraniliprole 10%+thiamethoxam 20% mixture, pests

Source: International Journal of Bio-resource and Stress Management

DOI: 10.23910/ijbsm/2016.7.5.1605