Abstract

Olive presses produce large amounts of solid waste, which remain mostly non-benefit, so this study aimed to take advantage of the solid residues of the olive mill (OMSW), locally called Al Fatora in the cultivation of barley. Where coincide production with the olive growing season to benefit from the increase the organic content of the soil and the increase of agricultural production. The first phase used agricultural soil and mixed with different amounts 0 - 25 - 50 - 75 - 100% of the solid waste of olives and the cultivation of barley plant through November 2017 and showed the results of unfit for agriculture where the growth of barley plant of low plant height, leaf area and chlorophyll content compared to the control treatment. Most plants died after the germination process due to the decrease in pH reaching 5.3 and the large increase of the organic matter, which reached 97%. The second phase included conversion of solid waste into compost decomposition processes (additions and additions) and anaerobic (additives and additives) through May 2017. The decomposition process resulted in higher pH, increased phosphorus and nitrogen content, reduced organic matter and potassium. Olive grate into organic fertilizer before adding them to the soil and used in the process of agriculture, especially decomposition antenna additions.