Evaluation of composted source-graded household refuse: Nitrogen effect

absorption de substances nutritives aprovechamiento de desechos azote carbon dioxide compostage composting contenido de materia seca cultivos de primavera culture de printemps danemark denmark desechos dinamarca dioxyde de carbone dry matter content hogares hordeum vulgare households methode methods mineralisation mineralization nitrogen nutrient uptake spring crops waste utilization wastes