The effect of agroecological factors on the quality of malting barley grain and malt grown as monoculture

absorption de substances nutritives agronomia agronomie agronomy barley straw cero-labranza contenido proteico cosecha cultivos de primavera culture de printemps ensemencement essai fertilidad del suelo fertilizantes nitrogenados germinability grain granos harvesting hordeum malt malta (producto) monocultivo monoculture mosto de cerveza nitrogen fertilizers nutrient uptake paille d'orge paja de cebada peso poder germinativo poids protein content pruebas rotation culturale rotational cropping siembra site factors soil fertility sowing spring crops trials weight wort zero tillage