Madras Agricultural Journal
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September(7-9) 2024

Evaluation of New Insecticides Against Tomato Fruit Borer, Helicoverpa armigera Hubner

Abstract

                                The survey was conducted to assess the pesticide use pattern tomato and two field experiments were conducted to assess the efficacy of new insecticide molecules against tomato fruit borer. The results revealed that farmers used eighteen different insecticides for the management of fruit borer in tomato and quinalphos, chlorantraniliprole, flubendamide, chlorpyriphos, lambda cyhalothrin and indoxacarb were found to be frequent used insecticide in tomato. Among the insecticides tested, flubendiamide 480 SC registered percent damage reduction of about 86.37 and 96.41 per cent & cent percent and 99.6 per cent reduction of larval population over untreated control in first and second experiment, respectively followed by chlorantraniliprole 18.5 SC at 30 g a.i.ha-1, lambda cyhalothrin 5 EC @ 15 g a.i. ha-1, indoxacarb 14.5 SC at 75 g a.i. ha-1, chlorpyriphos 20 EC at 200 g a.i. ha-1 and quinolphos 25 EC at 250 g a.i. ha-1. The harvest time residues of flubendiamide 480 SC at 48 g a.i. ha-1 were at a below detectable levels in tomato fruit and soil samples collected during the first harvest. Hence, flubendiamide 480 SC @ 48 g.ai. ha-1 is included as a best fit component in the integrated pest management of fruit borers in tomato.

Key words : Tomato, Flubendiamide, Survey, Bioefficacy, Residue, Fruit borer

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