Effects by NPK fertilizer, ammonium nitrate with lime and calcium nitrate on grass yield and mineral content

abonos compuestos azote calcio calcium compound fertilizers contenido mineral cultivos de pasto feed grasses fertilidad del suelo fertilisation fertilizer application fosfatos herbage crops leys magnesio magnesium mineral content nitrogen noruega norway phosphate phosphates plante pour herbage potasio potassium pradera temporal prairie temporaire rendement rendimiento soil fertility yields