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Agricultural Science Digest, volume 24 issue 1 (march 2004) : 13 - 16

BIO-EFFICACY OF VARIOUS CHEMICAL INSECTICIDES AGAINST APHID (APHIS GOSSYPIIGLOVER) OF "GCH-6" COTION (GOSSYPIUM HIRSUTUM U'

RR. Rathodl, J.G. Bapodra
1Pulse Research Station, Gujarat Agricultural University, Junagadh - 362 001, India

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Cite article:- Rathodl RR., Bapodra J.G. (2024). BIO-EFFICACY OF VARIOUS CHEMICAL INSECTICIDES AGAINST APHID (APHIS GOSSYPIIGLOVER) OF "GCH-6" COTION (GOSSYPIUM HIRSUTUM U'. Agricultural Science Digest. 24(1): 13 - 16. doi: .

ABSTRACT

An experiment was conducted during 1999–2000 to study the bio-efficacy of various chemical insecticides against aphid of “GCH-6” cotton (Gossypium hirsutum L) and their effect on ICBR. The results of eleven different insecticidal treatments showed that the treatments with imidacloprid 0.006 per cent, monocrotophos 0.04 per cent. endosulfan 0.07 per cent, dimethoate 0.03 per cent and methyl-o-demeton 0.025 per cent were found most effective for the control of A. gossypii on cotton under field condition. The maximum yield of seedcotton was recorded from the plots treated with endosulfan 0.07 per cent (1549 kg/hal. Treatment with monocrotophos 0.04 per cent was found most economical as it gave the highest cost benefit ratio (1 15.45) followed by methyl-o-demeton 0.025 per cent (1: 14.42), dimethoate 0.03 per cent (1: 14.39), phosphamidon 0.03 per cent (1: 13.73) and endosulfan 0.07 per cent (1: 11.14).

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