Utilization of organic materials in volcanic ash soils distributed widely in Tokachi district [Japan], 2: Adjustment of wide C/N ratio in winter wheat straw as applied to soil

aliment pour animaux alimentos alimentos para animales animal litter cama (animales) carbon carbone carbono cereal products cereales cereals chemistry chimie chimie du sol composition crops cultivos cultivos de grano desechos economic plants elements environment environnement feeds fertilidad del suelo foods forraje grosero fourrage grossier grain crops growing media lithological soil types medio ambiente medio de cultivo medios de enraizamiento milieu d'enracinement nitrogen content no metales nonmetals organic matter paille paja plantas plante plante de culture plants productos productos de origen vegetal productos derivados de cereales products produit produit alimentaire rooting media roughage site factors soil chemistry soil fertility soil types sol volcanique solid wastes straw subproductos subproductos de cereales substrat de culture teneur en azote trigo type de sol type de sol lithologique vegetable products volcanic soils wastes wheats