Studies on the growth of forage crops with application of fresh domestic animal wastes to soils, 5: Growth of dent corn and nitrate nitrogen level in the plant tissue tilled with different implements

abonos agricultural chemicals agronomic characters amendement du sol application methods biological development cereales cereals composition crecimiento croissance crops cultivation cultivo cultivos cultivos de grano dent maize economic plants engrais engrais organique enmiendas del suelo farmyard manure feed crops feed grasses fertilizers fisiologia fonction physiologique glumiflorae grain crops gramineae gramineas graminee grasses growth industrial crops inorganic compounds labranza methode methods monocotyledons nitrate nitrates nitratos nitrogen content oil crops physiological functions physiologie physiology plantas plantas azucareras plantas feculentas plantas forrajeras plantas industriales plantas oleaginosas plante plante de culture plante industrielle plants pratique culturale productividad productivity produit agrochimique profitability rendement rendimiento rentabilidad sales salts sel soil amendments starch crops sugar crops teneur en azote tillage travail du sol yields zea mays