The effect of caustic magnesite on the yield, content of nitrogenous substances and concentration of mineral elements in lucerne

abonos fosfatados abonos potasicos composition globale crop yield cultivo en contenedor culture en conteneur engrais potassique facteur de rendement factores de rendimiento magnesium fertilizers medicago sativa oligoelementos phosphate fertilizers pot culture potash fertilizers proximate composition rendement des cultures rendimiento de cultivos trace elements yield factors