Mungbean and cowpea national coordinated varietal trials 1981/82 - maha season [yields, Sri Lanka]

abonos abonos verdes agricultural chemicals agronomic characters alimentos amendement du sol asia asie caupi cover plants cowpeas crops cultivos cultivos de grano economic plants engrais engrais organique engrais vert enmiendas del suelo feed crops feed legumes fertilizers foods grain crops grain legumes green manures hortalizas (plantas) hortalizas leguminosas legumes leguminosas leguminosas de grano leguminosas forrajeras mung beans plantas plantas de cobertura plantas forrajeras plantas protectoras plante plante de couverture plante de culture plante de protection plants productividad productivity produit agrochimique produit alimentaire profitability protective plants recherche rendement rendimiento rentabilidad research soil amendments vegetable crops vegetable legumes yields