[Productivity and quality of corn for silage grown on eroded sward-podzolic soil [Efficiency of nitrogenous fertilizers under the conditions of central part of Klin-Dmitrov area]]

application rates calidad crop yield dose d'application ensilage (produit) ensilaje fertilizantes nitrogenados forraje verde fourrage vert green feed nitrogen fertilizers podzol podzoles podzols quality rendement des cultures rendimiento de cultivos silage water erosion zea mays