Evaluation of different management options against whitefly, bemisia tabaci for suppressing tomato leaf curl virus

Abstract

Whitefly, Bemisia tabaci, is a seirous insect pest of tomato and a vector of tomato leaf curl virus (ToLCV). Five management approaches were evaluated against whitefly to suppress ToLCV during Rabi 2021-22 in the research field of BARI, Gazipur. Two management packages i.e., T₃  (Seed treatment with Fortenza 60 FS @ 2.5 ml kg^-1 seed + Alternate spraying of Fizimite 10% @ 1 ml l^-l of water and Tundra 20 SP @ 1 g l^-1 of water. Total 5 sprays; 3 sprays with Fizimite 10% and 2 sprays with Tundra 20 SP at 10 days interval)  and T₄ (Seedbed netting with 60 mesh nylon net + Alternate spraying of Fizimite 10% @ 1 ml l^-l of water and Tundra 20 SP @ 1 g l^-1 of water. Total 5 sprays; 3 sprays with Fizimite 10% and 2 sprays with Tundra 20 SP at 10 days interval) offered satisfactory effectiveness considering reduced infestation of whitefly and ToLCV infection, higher yield and marginal benefit cost ratio (MBCR).

Bangladesh J. Agril. Res. 51(1): 453-460, March 2026