Effects of N, P, K fertilizers application rate and the plant nutrients content in the soil on the growth and quality of Chrysanthemum morifolium Ram

abonos fosfatados abonos nitrogenados abonos potasicos application rates calidad chrysanthemum crecimiento croissance crop yield dose d'application engrais potassique fertilidad del suelo growth nitrogen fertilizers phosphate fertilizers potash fertilizers quality rendement des cultures rendimiento de cultivos soil fertility