Inseticidas sistemicos granulados no controle das ninfas móveis das cigarras e seus efeitos na produtividade de cafeeiros
The present research was conducted to evaluate the efficiency and yield increase by granular systemic insecticides to control cicades, mostly Quesada gigas, in two infested coffee plantations: one grown in sandy and the other in clay soils in the State of Sao Paulo, Brasil. The active ingredients tested were aldicarbe, at 10 percent, carbofura, at 5 percent and dissulfotom, at 2.5 and 10 percent applied once in dosages normally used for coffee leaf miner control. An average reduction of 67.5 percent on mobile nymphs population was observed in the sandy soil and 54.1 percent in the clay soil plantation. The effect of the above treatments on productivity of coffee was tested over a four year period (1981-1985), and the percent yield increase was on the average: 175, 227 and 246 percent from aldicarbe, carbofura and dissulfotom, respectively
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| Format: | biblioteca |
| Published: |
1989
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| Subjects: | COFFEA ARABICA, QUESADA GIGAS, CIGARRA, NINFAS, INSECTICIDAS, ACCION SISTEMICA, GRANULOS, ALDICARB, CARBOFURAN, DISULFOTON, DOSIS DE APLICACION, DINAMICA DE LA POBLACION, RENDIMIENTO, BRASIL, |
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| Summary: | The present research was conducted to evaluate the efficiency and yield increase by granular systemic insecticides to control cicades, mostly Quesada gigas, in two infested coffee plantations: one grown in sandy and the other in clay soils in the State of Sao Paulo, Brasil. The active ingredients tested were aldicarbe, at 10 percent, carbofura, at 5 percent and dissulfotom, at 2.5 and 10 percent applied once in dosages normally used for coffee leaf miner control. An average reduction of 67.5 percent on mobile nymphs population was observed in the sandy soil and 54.1 percent in the clay soil plantation. The effect of the above treatments on productivity of coffee was tested over a four year period (1981-1985), and the percent yield increase was on the average: 175, 227 and 246 percent from aldicarbe, carbofura and dissulfotom, respectively |
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