Ocorrencia de resíduos do inseticida dissulfoton em folhas de cafeeiros após a sua aplicacao no solo
The accumulation of disulfoton residues in coffee (Coffea arabica L. cv. "Catuí" Vermelho) leaves was investigated following a soial application of a granular formulation of the insecticide (Solvirex 10G) in field plots of "Catuaí" coffee located in Lavras and in Patrocínio, MG, Brazil. The control of the coffee leaf miner (Perileucoptera coffeella), the most important insect pest of coffee in Minas Gerais, was also evaluated. The insecticide was applied at the beginning of the rainy season (early November) at the rates of 25 and 50 g of the formulation per tree. Samples of leaves were collected at fifteen-day intervals and the residues of disulfoton and its toxic oxidation products were determined by liquid-gas chromatography using a flame photometric detector. Maximum rates of residues were found in the leaves in the 3.9 and 9.3 ppm concentrations about the end of January in Patrocínio, and in the 6.9 and 17.7 ppm concentrations in Lavras for the 25 and 50 g/tree, respectively. In Patrocínio, where the infestation was higher, the application of 50 g/tree resulted in a control of the leaf miner up to the end of May, when the residues levels decreased to about 2 ppm.
Main Authors: | 110763 Rigitano, R.L. de O., 121018 Souza, J.C. de |
---|---|
Format: | biblioteca |
Published: |
1994
|
Subjects: | COFFEA ARABICA, CATUAI, LEUCOPTERA COFFEELLA, DISULFOTON, RESIDUOS, CONTROL QUIMICO, CROMATOGRAFIA GAS-LIQUIDO, |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Doses do inseticida sistemico granulado dissulfoton no controle do bicho mineiro das folhas do cafeeiro em dois espacamentos de lavoura de café
by: 60872 D'Antonio, A.M., et al.
Published: (1989) -
Comparaçao de alguns inseticidas fosforados para controle ao bicho mineiro do cafeeiro - Perileucoptera coffeella (Guerin - Meneville, 1842)
by: 60873 D'Antonio, A.M.D., et al.
Published: (1981) -
Comparaçao da eficiencia de tres inseticidas no controle do bicho mineiro do cafeeiro, Perileucoptera coffeella (Guerin - Meneville, 1842)
by: 99049 Netto, N.D., et al.
Published: (1980) -
Viabilidade da mistura Cypermethrin e Clorpirifos no controle do bicho mineiro do cafeeiro Perileucoptera coffeella (Guer-Men, 1842) (Lepidoptera-Lyonetidae)
by: 47988 Bendeck, O.R.P., et al.
Published: (1981) -
Epocas de aplicaçao de inseticidas sistémicos granulados, no controle ao bicho mineiro, (Perileucoptera coffeella) (Guer.-Men., 1842) do cafeeiro
by: 41672 Almeida, P.R. de, et al.
Published: (1979)