[Effects of ammonium nitrate and nitrogen solution on wheat]

abonos nitrogenados ammonitrate application rates calcareous soils calcium ammonium nitrate cereal crops chemical soil types contenido proteico crop yield cultivos de cereales dose d'application engrais liquide fertilisation fertilizer application france francia grain granos liquid fertilizers nitrogen fertilizers protein content rendement des cultures rendimiento de cultivos sol calcaire triticum aestivum type de sol chimique