Control cultural de las malezas en yuca | Land Portal | Asegurando los Derechos a la Tierra a través de Datos Abiertos

Información del recurso

Date of publication: 
Diciembre 1979
Resource Language: 
ISBN / Resource ID: 
handle:10568/81706
License of the resource: 

Some cultural control measures of weeds in cassava are discussed: quality of the material, planting system and density, density x plant type interaction and use of mulching. In order to study the interaction plant type x planting density, var. M Mex 59 (vigorous) and M Col 22 (nonvigorous) were planted in plots of 7500 and 15,000 plants/ha; and 3 levels of weed control were established: complete, intermediate and no control. The vigorous var. was less than sensitive to a deficiency in control than the nonvigorous var.; the increase in fresh root yield reached up to 60 percent at high densities. Different materials for mulching were evaluated at Carimagua and CIAT (Colombia), obtaining effective weed control with corn husks, hay from Hyparrhenia rufa and Stylosanthes guyanensis, and sugar cane leaves. Moreover, 2 cover crops (Desmodiutn heterophyllum and Phaseolus vulgaris) were evaluated, as well as cane bagasse, chemical control and continuous manual weeding systems. Highest yields in cassava were obtained with weeding 22, 40, 60 and 115 days after planting, but it was the most expensive because of the labor. The 2 cover crops are valid choices for their effectiveness, but their high cost justifies their use only when seed is produced locally and with family labor. Intercropping systems and different weed control practices were studied whereby the stabilizing effect of the cassava yield was verified and the utilization of legumes with short growing cycles was shown to reduce weed growth. It is concluded that there are many possibilities of combining cultural weed control with other measures to permit the farmer to choose between capital or labor input. (CIAT)||Se describen algunas medidas de control cultural de malezas en yuca: calidad del material; sistema y densidad de siembra; interaccion tipo de planta x densidad y uso de coberturas. Para estudiar la interaccion tipo de planta x densidad de siembra, se sembraron las var. M Mex 59 (Vigorosa) y M Col 22 (no vigorosa) en parcelas de 7500 y 15.000 plantas/ha y se establecieron 3 niveles de control de malezas: completo, intermedio y sin control. La var. vigorosa fue menos sensible a una deficiencia en el control que la var. no vigorosa; el incremento del rendimiento de raices frescas alcanzo hasta un 60 por ciento empleando la densidad de siembra alta. En Carimagua y CIAT (Colombia) se evaluaron diferentes materiales como cobertura, y se obtuvo buen control de malezas, con paja de maiz, heno de pasto puntero (Hyparrhenia rufa) y de Stylosanthes guyanensis, y hojas de cana de azucar. Se evaluaron ademas 2 coberturas verdes (Desmodium heterophyllum y Phaseolus vulgaris) junto con bagazo de cana y sistemas de control quimico y manual continuo. El mas alto rendimiento de la yuca se obtuvo con desyerbas a los 22, 40, 60 y 115 dias de la siembra, pero fue el de mayor costo de mano de obra. Los 2 sistemas de coberturas verdes aparecen como opciones validas por su efectividad, pero su alto costo solo justifica su empleo cuando la semilla se produce localmente y la mano de obra es familiar. Se estudiaron sistemas de cultivo intercalado y diferentes practicas de manejo de malezas, con los cuales se confirmo el efecto estabilizador del rendimiento de la yuca, y se demostro que la utilizacion de leguminosas de ciclo vegetativo corto reduce el crecimiento de las malezas. Se concluye que existen muchas posibilidades de combinar el control cultural de malezas con otras medidas para permitir al agricultor escoger entre insumos de capital o mano de obra. (CIAT)

Autores y editores

Author(s), editor(s), contributor(s): 
Leihner, D.E. Doll, Jerry D.
Publisher(s): 

Mission

To reduce hunger and poverty, and improve human nutrition in the tropics through research aimed at increasing the eco-efficiency of agriculture.

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Proveedor de datos

CGIAR (CGIAR)

CGIAR is the only worldwide partnership addressing agricultural research for development, whose work contributes to the global effort to tackle poverty, hunger and major nutrition imbalances, and environmental degradation.

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