Effect of NPK overfertilization on nutrient turnover in soil and plant. 3. Proportions of nutritive elements in six-leaf maize [Zea mays, nitrogen fertilizers, phosphate fertilizers, potassium, chemical analysis]

agricultural chemicals alkali metals analisis analyse analyse chimique analysis cereales cereals chemical analysis crops cultivos cultivos de grano economic plants elements engrais feed crops feed grasses fertilizantes fosfatados fertilizantes nitrogenados fertilizers fosfatos glumiflorae grain crops gramineae gramineas graminee grasses industrial crops inorganic compounds metal metales metales alcalinos metals methode methods monocotyledons nitrogen fertilizers oil crops phosphate phosphate fertilizers phosphates plantas plantas azucareras plantas feculentas plantas forrajeras plantas industriales plantas oleaginosas plante plante de culture plante industrielle plants potasio potassium produit agrochimique sales salts sel soil sol starch crops suelo sugar crops zea mays