[Effect of fertilization systems on barley quality at cultivation on sod-podzolic loamy sand soil]

abonos nitrogenados abonos nk abonos np amino acids barley belarus calidad cebada cereales cereals contenido proteico crop yield cultivation cultivo dosage effects efficiency eficacia engrais nk engrais np fertilisation fertilizer application inorganic fertilizers loam soils nitrogen fertilizers nitrogen phosphorus fertilizers nitrogen potassium fertilizers orge podzol podzoles podzols pratique culturale protein content quality rendement des cultures rendimiento de cultivos sol sablolimoneux suelo franco weather