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Relative efficacy and economics of acephate orthene 75 species for the control of cotton bollworms



Relative efficacy and economics of acephate orthene 75 species for the control of cotton bollworms



Indian Journal of Plant Protection 12(1): 43-47



A field trial was conducted during kharif 1982-83 at the Research Farm, Marathwada Agriculture University, Parbhani [India]. Bioefficacy of acephate (Orthene 75 S.P.) a new organophosphate insecticide, was evaluated for the control of cotton bollworm complex [Heliothis armigera, Earias spp. and Pectinophora gossypiella] in comparison with the recommended insecticides like carbaryl, endosulfan and monocrotophos. The results indicated that acephate at 525 g a.i./ha sprayed four times at 15 days interval, starting from 60 days after sowing was equally effective in reducing the bollworm damage as that of recommended insecticides. The avoidable loss and cost-benefit ratio for different treatments were worked out. Highest cost-benefit ratio of 6.39 was recorded for carbaryl applied at 750 g a.i./ha., followed by endosulfan and acephate at 525 g a.i./ha, respectively.

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