Productividad y costos operacionales de la chapea mecanizada en plantaciones jóvenes de Acacia mangium en la zona norte de Costa Rica
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Editorial Tecnológica de Costa Rica
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Se evaluaron dos tipos de chapea mecanizada en plantaciones jóvenes de Acacia mangium, localizadas en la zona norte de Costa Rica. Mediante un estudio de tiempos y movimientos se determinó la productividad y costos de ambas operaciones. Se encontraron valores de eficiencia superiores al 55 % siendo la operación de chapea con tractor agrícola la que reportó mayor porcentaje con un 73%. La operación de chapea con tractor agrícola presentó una productividad mayor (4,98 ha/jornal) que la operación de chapea con motoguadaña (1,15 ha/jornal) Los costos por hora y por jornal fueron menores para la chapea con motoguadaña, sin embargo, el costo total por hectárea fue más elevado ($52 respecto a la operación con tractor agrícola debido a una menor productividad de la mano de obra.
Two mechanical weed control operations were assesed in young Acacia mangium stands located in the northern part of Costa Rica. Through a series of time and movement observations the productivity, efficiency and costs of both operations were determined. The two operations presented efficiency values higher than 55%. The productivity of the agricultural tractor was higher (4,98ha/day) than the obtained with trimmers (1,15 ha/day). Total cost per hectare was $13 for the agricultural tractor and $52 for trimmer.
Two mechanical weed control operations were assesed in young Acacia mangium stands located in the northern part of Costa Rica. Through a series of time and movement observations the productivity, efficiency and costs of both operations were determined. The two operations presented efficiency values higher than 55%. The productivity of the agricultural tractor was higher (4,98ha/day) than the obtained with trimmers (1,15 ha/day). Total cost per hectare was $13 for the agricultural tractor and $52 for trimmer.