Fighting weeds in mono-cultures of forage peanut (Arachis pintoi).
DOI:
https://doi.org/10.15517/am.v8i2.24654Abstract
We evaluated four chemical treatments (herbicides) used to fight weeds, as compared to manual weed picking and using a witness treatment. All treatments had a rotational handling with 6.5 animal units (12 animals of 250 kg per five haurs). We used a proteid bank or monoculture of forage peanut, in an arca of 1080 sq.mt., with a 30 days break. In order to evaluate the many variables, we used an experimen-tal design of complete random blocks, with six treatments and tree repetitions per treatment. In order to determine the coverage of the culture, its tolerance to the active ingredient and the level of treatment control, we carried out four evaluations: 0, 30, 60, and 90 days of treatment application. We found differences (P<0.01) between treatments related to the degree of coverage of the forage peanut plants. With Gliphosate and manual weeding, we obtained a dominant coverage of forage peanut, while with the witness treatment the degree of coverage was inferior. The production of dry matter from the weeds, as well as their percentage in the pasture, decreased in a significant way (P<0.01), through the sampling process. With the witness treatment we obtained the largest amount of dry matter in the weeds, and also the highest percentage of weeds in the pasture.
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References
ARGEL, P. 1991. Arachis pintoi: a new tropical pasture legume. Tropical Pasture Program. Centro Internacional de Agricultura Tropical (CIA T). Documento borrador sin editar.
ARGEL, P.; V ALERIO, A. 1992. Selectividad de herbicidas en el control de malezas en Arachis pintoi. Pasturas Tropicales. 14(2):23-26.
ASHTON, F. ; CRAFTS, A. 1981. Mode of action of herbicides. 2 da ed. Nueva York, Estados Unidos. John Willey and Sons. 525 p.
CIAT. 1987. Programa de pastos tropicales. Informe anual 1986. Cali, Colombia. 347 p.
CHAVARRíA, W. 1990. Evaluación agroeconómica de tratamientos químicos y físicos para el control de malezas en maní (Arachis hipogaea L). Tesis presentada para optar al título de Ingeniero Agrónomo con énfasis en Fitotecnia. Universidad de Costa Rica. San Pedro, San José. 75 p.
GIRALDO, L. 1991. Evaluación bajo pastoreo de la gramínea Brachiaria brizantha CIAT 6780 establecida sola o en asocio con Arachis pintoi CIAT 17434 manejadas bajo dos cargas animales, en el trópico húmedo de Costa Rica. Tesis Mg. Sc. CATIE. Turrialba, Costa Rica. 144 p.
HURTADO, J. 1988. Introducción de leguminosas y manejo del pastoreo. Tesis Mg. Sc. CATIE. Turrialba, Costa Rica. 107 p.
MUÑOZ, L. 1989. Evaluación de mezclas de herbicidas preemergentes y posemergentes en maní (Arachis hipogaea L.) en la Estación Experimental Fabio Baudrit M. Tesis presentada para optar al título de Ingeniero Agrónomo con énfasis en Fitotecnia. Universidad de Costa Rica. San Pedro, San José. 85 p.
ROIG, C. 1989. Evaluación preliminar de 200 accesiones de leguminosas forrajeras tropicales en un ecosistema de bosque tropical lluvioso (Guápiles, Costa Rica). Tesis Mg. Se. CA TIE. Turrialba, Costa Rica. 179 p.
SOTO, A. 1992. Escalas para valorar la cobertura del cultivo forrajero, su tolerancia al ingrediente activo y el grado de control del herbicida. Comunicación personal.
SOTO, A.; AGÜERO, R. 1992. Combate químico de malezas en el cultivo de arroz. San José, Costa Rica. Editorial Universidad de Costa Rica. 81 p.
VAN HEURCK, L. 1990. Evaluación del pasto Estrella (Cynodon nlemfuensis) solo y asociado con las leguminosas forrajeras Arachis pintoi CIAT 17434 y Desmodium ovalifolium CIAT 350 en la producción de leche y sus componentes. T
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