Several insecticides were tested against the pointed gourd vine borer, Apomecyna Saltator Fabr.. a serious pest of pointed gourd. Isofenphos sprayed @ 0.5 kg a.i./ha killed 100% grubs feeding in the vines, Soil treatment with granular phorate, carbofuran quinalphos or disulfoton or aldrin dust applied @ 1 kg a. i/ha during january killed 75% grubs habitating in the roots left for ratoon crop. Maximum net profit of Rs 2.267 /ha was obtained when the crop was sprayed With quinalphos 0.5/kg a.i./ha at 280 days after planting (DAP) However, the benefit cost ratio was higher with phosphamidon treatment.
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Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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