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Custo de aplicacao de malathion no controle de pragas do cacaueiro

by Abreu, J.M. de; Monteiro, A.
Publisher: 1986Subject(s): THEOBROMA CACAO | CONTROL DE PLAGAS | INSECTICIDAS | COSTOS | FORMULACIONES | LIQUIDOS PULVERIZABLES | POLVO | NEBULIZACION | DOSIS DE APLICACION | BRASIL | THEOBROMA CACAO | PEST CONTROL | INSECTICIDES | COSTS | FORMULATIONS | SPRAYS | MIST IRRIGATION | APPLICATION RATES | BRAZIL | THEOBROMA CACAO | LUTTE ANTIRAVAGEUR | INSECTICIDE | COUT | FORMULATION | BOUILLIE | NEBULISATION | DOSE D'APPLICATION | BRESIL In: Boletim Técnico - Comissao Executiva do Plano da Lavoura Cacaueira (Brasil) (no.141) 10 p.Summary: This paper presents the results of an experiment which was carried out with the purpose of evaluating the costs of application of malathion, under three methods of aplication: dusting, spraying and thermal fogging. The experiment was conducted in a 12 ha flat area, planted with cacao hybrids with 3 x 3 m spacing, shaded with Erythrina sp., with a 24 x 24 m spacing, and with one tree in the intersection of the diagonals. Malathion was applied at the rate of 300 g a.i. /ha in all formulations. Cost estimates were calculated on the basis of equipment depreciation, interests on capital loans, repairs, replacement of spare parts and other expenses. Results showed that cost of spraying was Cz 71,34 per hectare, dusting Cz 81,38 and thermal fogging Cz 83,92.
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This paper presents the results of an experiment which was carried out with the purpose of evaluating the costs of application of malathion, under three methods of aplication: dusting, spraying and thermal fogging. The experiment was conducted in a 12 ha flat area, planted with cacao hybrids with 3 x 3 m spacing, shaded with Erythrina sp., with a 24 x 24 m spacing, and with one tree in the intersection of the diagonals. Malathion was applied at the rate of 300 g a.i. /ha in all formulations. Cost estimates were calculated on the basis of equipment depreciation, interests on capital loans, repairs, replacement of spare parts and other expenses. Results showed that cost of spraying was Cz 71,34 per hectare, dusting Cz 81,38 and thermal fogging Cz 83,92.

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