Tillage and amendment effects on soil carbon and nitrogen mineralization and phosphorus release

abonos npk alabama (eu) alabama (eua) alabama (usa) amendement du sol aves de corral azote cama (animales) carbon carbone carbono conservation tillage conventional tillage cycling engrais npk enmiendas del suelo fosforo labranza convencional litter for animals nitrogen npk fertilizers organic matter phosphore phosphorus poultry soil amendments travail du sol conventionnel travail du sol de conservation volaille