El impacto de la ganadería y la agricultura en los ecosistemas terrestres.-Utilización sostenible de purines de cerdo, con y sin tratamiento, como enmienda orgánica en cultivos de almendro.

Abstract

RESUMEN This study consists in the use of different forms of slurry, as an organic fertilizer, on almond trees located in La Aljorra (Cartagena, Murcia). The slurry used comes from a farm near the area of study, which has a treatment system composed by tree parts: a phase separator, a bioreactor and 5 constructed wetlands of vertical flow. Different phases of slurry are obtained from each part of the system. The results show the reduction of most of the parameters like salinity, BOD5, QOD, nitrates, etc. The use of these effluents as an organic amend in different doses, supposes a sustainable way of management of these residues; at the same time it improves the soil properties and the agronomic quality of the almond tree crop.