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Research Article Open access CC BY 4.0

Efficacy and Economics of Selected Insecticides against Pod Borer [Helicoverpa armigera (Hubner)] on Cowpea [Vigna unguiculata (L.)Walp.]

Gundlapalli Ranjith, Ashwani Kumar

International Journal of Environment and Climate Change · pp. 1306–1310 · Published 17 Jul 2023

10.9734/ijecc/2023/v13i92359

Abstract

A field trail was conducted at CRF, SHUATS, Naini, Prayagraj during Kharif season 2022. Eight treatments were evaluated against Helicoverpa armigera i.e. of Chlorantraniliprole 18.5 SC, Emamectin benzoate 5 SG, Flubendiamide 480 SC, Spinosad 45 SC, Thiamethoxam 25 WG, Lambda cyhalothrin5 EC, Indoxacarb 14.5 SC and untreated Control. Results revealed that, among the different treatments lowest larval population of cowpea pod borer was recorded in Chlorantraniliprole 18.5 SC (1.323). Lambda cyhalothrin5 EC (1.478) was found tobe the next best treatment followed by Emamectin benzoate 5 SG (1.589), Indoxacarb 14.5 SC (1.734) and Flubendiamide 480 SC (1.922).The least effective treatments were Spinosad 45 SC (2.089) where as Thiamethoxam 25 WG (2.200) was found to be least effective. The plot treated with Chlorantraniliprole 18.5 SC show highest yield (19.46 q/ha) followed Lambda cyhalothrin5 EC (17.82 q/ha) the best and most economical treatment was Chlorantraniliprole 18.5 SC (1: 3.89). Among the treatments studied, the best and most economical treatment was Chlorantraniliprole 18.5 SC (1: 3.89) followed by Lambda cyhalothrin 5 EC (1:3.67), Emamectin benzoate 5 SG (1:3.41), Indoxacarb 14.5 SC (1:2.95), Flubendiamide 480 SC (1:2.56), Spinosad 45 SC (1:2.27) and Thiamethoxam 25 WG (1:2.17) as compared to untreated control plot (1:1.60).

Cost-benefit ratio cowpea efficacy H. armigera insecticides larval population

References (12)

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