New signposts for keeping track of the "nitrogen process in barley" [jubil test, foliar diagnosis, prediction of proteins]

abonos nitrogenados analyse de tissus azote cebada cervecera cereal crops contenido proteico cultivos de cereales fertilisation fertilizer application feuille forecasting gestion hojas hordeum vulgare leaves malting barley management nitrogen nitrogen fertilizers orge de brasserie protein content tissue analysis