Control of foliar insect pests on eggplant with systematic granular insecticides
1994
Litsinger, J.A. | Apostol, R.F. (International Rice Research Inst., Los Banos, Laguna (Philippines). Entomology Div.)
Deep, point placement of systematic granular insecticides at the base of eggplants 44 days after transplanting controlled foliar insect pests - aphid Aphis gossypii Glover, leafhopper Amrasca biguttula biguttula (Shiraki), whitefly Bemmisia tabaci (Gennadius), mealybug Ferrisia virgata (Cockerell), flea beetle Luperomorpha serricornis (Duvivier), and spotted ladybettle Epilachna vigintisexpuncta philippinensis Dieke - through harvest, 129 days after treatment. Except for mephosfolan, three materials (phorate, disulfoton, and carbofuran) at 1 kg A.I./ha dosage, split into two applications, gave as good control as double the rate applied as a split. Carbofuran at 2 kg A.I./ha applied once was as effective as the split application, so the single application saved labor. Carbofuran produced the highest yield, possibly as a nematocide. Residues in the fruit of carbofuran were under residue tolerances set in the USA and Canada. Based on produce efficacy and savings, farmers have switched to deep, point placement of carbofuran granules rather than their accustomed weekly foliar sprays
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