Chemical Characteristics of Two-Phase Olive-Mill Waste and Evaluation of Their Direct Soil Application in Humid Mediterranean Regions

Over the last decade, two-phase centrifugation system for olive-oil extraction has become dominant in Slovenia. There are many suggestions exploitation of OMW, but among suggested methods, direct spreading on agricultural land appears to be operationally simple and economically feasible As there is little information available about OMW produced northern Mediterranean regions, aim was determine its composition evaluate use as a soil amendment olive groves. This study shows that characteristics olive-mill waste regions similar those other countries. In addition, calcareous can reduce phytotoxic effects might thus represent natural treatment. Phenolic compounds rapidly decomposed, high buffering capacity. Furthermore, results analysis also showed some properties, such significant increase K2O organic carbon. The combined application mineral fertilizer groves eutric cambisols positive physical, chemical biochemical properties soil.