Evaluación de dosis de herbicidas en la asociación Cafeto Frijol en dos localidades del valle central 1/
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Fonseca C., Carlos
Herrera Murillo, Franklin
Zamora Z., Alice
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Universidad de Costa Rica
Abstract
En dos localidades del Valle Central de Costa Rica (Cacao de Alajuela y Santo Domingo de Heredia) se evaluaron tres dosis de los herbicidas acifluorfén, alaclor, metabenzatiazurón, cianazina y diurón, en frijol (cv.Huetar) sembrado en la hilera de poda del cafeto (cv. Caturra). La cianazina eliminó el frijol y causó clorosis en los brotes del cafeto que se recuperó 20 días después de la aplicación. El diurón afectó negativamente al frijol y en forma leve lo hizo el alaclor sin que afectaran al cafeto. El acifluorfén y metabenzatiazurón afectaron levemente ambos cultivos, con recuperación del cafeto 20 días después de la aplicación. Las malezas presentes no afectaron los rendimientos de frijol debido a varios factores de manejo del cafeto que minimizan el problema de malezas en esta asociación. Los rendimientos de frijol fueron mayores en Santo Domingo, al parecer, el sistema de poda al cafeto aplicado en esta localidad influyó en estos resultados.
Three doses of the herbicides acifluorfen, alachlor, methabenzathiazuron, cianazine and diuron were tested on common bean (Phaseolus vulgaris L.) cv. Huetar planted on the pruned coffee row (cv. Caturra) in two localities (Cacao de Alajuela and Santo Domingo de Heredia) of the Central Plateau in Costa Rica. The cianazine eliminated the beans and caused chlorosis to the coffee sprouts, which recovered 20 days alter its application. The diuron affected negatively the bean and lightly did so the alachlor, without affecting the coffee plants. The acifluorfen and methabenzathiazuron lightly affected both crops, although the coffee recovered 20 days alter the application. The present weeds did no affect the bean yield due to several management practices on the coffee, which lessened the weed problem in this intercropping system. The bean yield was higher in Santo Domingo and it seems that the coffee pruning system applied in this locality influenced these results.
Three doses of the herbicides acifluorfen, alachlor, methabenzathiazuron, cianazine and diuron were tested on common bean (Phaseolus vulgaris L.) cv. Huetar planted on the pruned coffee row (cv. Caturra) in two localities (Cacao de Alajuela and Santo Domingo de Heredia) of the Central Plateau in Costa Rica. The cianazine eliminated the beans and caused chlorosis to the coffee sprouts, which recovered 20 days alter its application. The diuron affected negatively the bean and lightly did so the alachlor, without affecting the coffee plants. The acifluorfen and methabenzathiazuron lightly affected both crops, although the coffee recovered 20 days alter the application. The present weeds did no affect the bean yield due to several management practices on the coffee, which lessened the weed problem in this intercropping system. The bean yield was higher in Santo Domingo and it seems that the coffee pruning system applied in this locality influenced these results.