Decomposition of leaf litter from tropical forage grasses and legumes

andropogon gayanus arachis arachis pintoi azote brachiaria brachiaria decumbens brachiaria dictyoneura brachiaria humidicola centrosema acutifolium colombia colombie cycling degradation desmodium ovalifolium gramineas graminee grasses legumes leguminosas nitrogen pueraria phaseoloides stylosanthes stylosanthes capitata stylosanthes guianensis tropical zones zona tropical zone tropicale