Evaluation of the effects of short-term amendment with olive mill pomace on some soil properties
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Laboratory of Biotechnology, Water, Environment and Health, University of Abbes Laghrour, Khenchela, Algeria, university Abbe sLaghrour Khenchela, Algeria
Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli, 4, 53100 Siena, Italy
Department of Ecology, SNV Faculty, Abbes Laghrour University, Khenchela, Algeria
Laboratory of Plant Biology and Environnement, Faculty of Sciences, University Badji Mokhtar-Annaba, BP12, 23000 Annaba, Algeria
Biology, Laboratory of Bioactive Molecules and Applications, Larbi T´ebessi University, Tebessa 12. 000,, Algeria
Submission date: 2022-01-30
Final revision date: 2022-04-24
Acceptance date: 2022-05-27
Online publication date: 2022-05-27
Corresponding author
Nawal Mekersi   

Laboratory of Biotechnology, Water, Environment and Health, University of Abbes Laghrour, Khenchela, Algeria, university Abbe sLaghrour Khenchela, Algeria
Soil Sci. Ann., 2022, 73(2)150493
The extraction of olive oil produces an enormous quantity of waste, such as olive mill wastewater (OMWW) and olive mill pomace (OMP), The majority of the agricultural wastes, including olive oil mill waste, are used as soil amendments due to their high nutritional value. The purpose of this study was to investigate the effects of the amendment with olive mill pomace from a 3-phase cold-pressed system on the characteristics of the soil pH, electrical conductivity (EC), and organic matter content (OM). The experiment was carried out using increasing rates of olive mill pomace (12.5%, 25%, 50%, 75%, and 100% w/w) plus the control untreated soil in microcosms under laboratory conditions. The results showed that the treatment of soil with olive mill pomace has a significant effect on soil properties (pH, EC, OM, OC, and CaCO3) soil pH was decreased under OMP treatment, especially with high doses of PR4 and PR5, and the electrical conductivity of the soil (EC) was increased, as well as soil carbonate content. Moreover, the soil organic matter content and soil organic carbon content were highly increased under the treatment with OMP. As a result, we can consider the olive mill pomace as a soil fertilizer. Pretreatment of olive mill pomace to reduce acidic pH and salt content before use as a soil amendment is also recommended.
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