Dynamics of inorganic nitrogen in the soil and its influence on the yield and quality of spring barley

analyse de sol cultivos de primavera culture de printemps etapas de desarrollo de la planta gleysol gleysoles gleysols hordeum vulgare nitrogen content nutrient transport plant developmental stages plant soil relations relaciones planta suelo relation plante sol rendement rendimiento soil testing spring crops teneur en azote transport des substances nutritives transporte de nutrientes yields