[Animal manure and composts: Utilization of nutrients from stable and field in organic farming: Composting loss of plant nutrients and carbon and the fertilizer value of compost]

abonos agriculture biologique almacenamiento ammonia ammoniac azote carbon carbone carbono compost composts crianza en cama profunda danemark deep litter husbandry denmark dinamarca engrais farmyard manure fertilizers fosforo fumier leaching lessivage du sol losses nitrogen nutrientes nutrients organic agriculture perte phosphore phosphorus stockage storage substance nutritive temperatura temperature