[Grass-legume associations evaluated under different grazing intensities and frequencies at Puerto Bermudez, Peru]

brachiaria carga ganadera centrosema contenido de materia seca crop yield desmodium ovalifolium dry matter content feed grasses feed legumes grasslands grazing grazing intensity herbage humid tropics intensidad de pastoreo leguminosas forrajeras pastoreo praderas rendement des cultures rendimiento de cultivos stocking density taux de charge tropiques humides zornia