Evaluation of seven promissing grasses in a red ferralitic soil of Havana province under non irrigation conditions [Cuba]

adaptation botanical composition brachiaria humidicola cenchrus ciliaris chemical composition composition botanique composition chimique crop yield cropping systems cultivos de secano culture de moyenne altitude dry season evaluation feed grasses ferralsol ferralsoles ferralsols habana havana panicum coloratum panicum maximum rendement des cultures rendimiento de cultivos saison humide sistemas de cultivo upland crops variedades varieties wet season