Efficacy of Various Ready-mix Insecticides against Spodoptera litura (Fab.) in Groundnut
Dudhatra M. C. *
Department of Entomology, Junagadh Agricultural University, Junagadh, Gujarat, India.
Bharadiya A. M.
Main Oilseeds Research Station, Junagadh Agricultural University, Junagadh, Gujarat, India.
Makani J. D.
Department of Entomology, Junagadh Agricultural University, Junagadh, Gujarat, India.
Polara R. D.
Department of Entomology, Junagadh Agricultural University, Junagadh, Gujarat, India.
*Author to whom correspondence should be addressed.
Abstract
A field experiment was carried out to study the efficacy of various ready-mix insecticides against Spodoptera litura (Fab.) in groundnut at Main Oilseeds Research Station, JAU, Junagadh during Kharif, 2023. Out of the seven ready-mix insecticidal treatments evaluated, chlorantraniliprole 10 + lambda-cyhalothrin 5 ZC 0.006% was found most effective against S. litura after two sprays. It recorded the lowest larval population (0.60 larvae/plant), highest pod and haulm yields (1584 and 3286 kg/ha, respectively), highest yield increase over the untreated control (69.95% for pods and 64.66% for haulms) and the highest net realization (₹ 48178/ha). The treatments of novaluron 5.25 + emamectin benzoate 0.9 SC 0.009% and chlorpyriphos 50 + cypermethrin 5 EC 0.11% were proved next best treatments over untreated control. Among the various ready-mix insecticidal treatments, chlorpyriphos 50 + cypermethrin 5 EC 0.11% exhibited the highest ICBR of 1:14.3, followed by chlorantraniliprole 10 + lambda-cyhalothrin 5 ZC 0.006% (1:11.4). However, the treatments viz., profenofos 40 + cypermethrin 4 EC 0.088% (1:4.4), novaluron 5.25 + indoxacarb 4.5 SC 0.016% (1:4.3) and emamectin benzoate 5 + lufenuron 40 WG 0.009% (1:2.8) exhibited lower ICBR.
Keywords: Efficacy, groundnut, S. litura, ready-mix insecticides