Agronomic assessment of solar dried recycled olive mill sludge on Maize agrophysiological traits and soil fertility
Purpose Olive mill waste sludge (OMWS) is a solid by-product resulting from olive oil extraction, OMWS is usually left decanting in landfills causing environmental pollution and a significant loss of recyclable organic resources. This study aims to evaluate the feasibility of producing an organic am...
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| Format: | Article |
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OICC Press
2022-06-01
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| Series: | International Journal of Recycling of Organic Waste in Agriculture |
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| Online Access: | http://ijrowa.khuisf.ac.ir/article_687584_b621ab7e82c2b5f644fece79b97e88ac.pdf |
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| author | Bouhia Youness Lyamlouli Karim Yedir Oudouch El Mehdi El Boukhari Mohamed Mohamed Hafidi |
| author_facet | Bouhia Youness Lyamlouli Karim Yedir Oudouch El Mehdi El Boukhari Mohamed Mohamed Hafidi |
| author_sort | Bouhia Youness |
| collection | DOAJ |
| description | Purpose Olive mill waste sludge (OMWS) is a solid by-product resulting from olive oil extraction, OMWS is usually left decanting in landfills causing environmental pollution and a significant loss of recyclable organic resources. This study aims to evaluate the feasibility of producing an organic amendment through treating OMWS with solar drying (SDy), which is a low-cost method, highly adapted to semi-arid and low-income countries.Method We investigated the effect of 90 days SDy on OMWS physico-chemical properties, then the agronomic efficiency of the resulting product was assessed under greenhouse conditions, using Zea mays as a crop model.Results The SDy treatment significantly reduced OMWS initial moisture and the C/N ratio, while the nutrient content of the final product was improved. Pot trial under greenhouse conditions revealed that the application of SDy-OMWS improved the soil physico-chemical properties. The initial application decreased soil pH from 8.19 to 7.06, and soil phosphorus (P), potassium (K), iron (Fe) and zinc (Zn) increased by 209%, 162.4%, 290% and 270% respectively compared to the unamended control. SDy-OMWS application initially induced a delayed seed germination and plant growth at early stages, which was followed by a significant improvement of plant above and below ground traits, including photosynthetic activity, stomatal conductance, and root parameters (RL, RSA and RV).Conclusion Overall, SDy significantly reduced the C/N ratio, moisture, and improved the nutrient content of OMWS. Despite improving soil fertility, SDy-OMWS application negatively affected the plant development at early stages. However, such effect was completely alleviated at the end of the experiment. |
| format | Article |
| id | doaj-art-2a295e3bd64c4121aaca0ad11d52138d |
| institution | Kabale University |
| issn | 2195-3228 2251-7715 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | OICC Press |
| record_format | Article |
| series | International Journal of Recycling of Organic Waste in Agriculture |
| spelling | doaj-art-2a295e3bd64c4121aaca0ad11d52138d2025-02-03T10:42:40ZengOICC PressInternational Journal of Recycling of Organic Waste in Agriculture2195-32282251-77152022-06-0111224726110.30486/ijrowa.2022.1924987.1208687584Agronomic assessment of solar dried recycled olive mill sludge on Maize agrophysiological traits and soil fertilityBouhia Youness0Lyamlouli Karim1Yedir Oudouch2El Mehdi El Boukhari Mohamed3Mohamed Hafidi4Laboratory of Microbial Biotechnology, AgroSciences and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, MoroccoAgroBioSciences Program, Mohammed VI Polytechnic University (UM6P), Benguerir 43150, MoroccoLaboratory of Microbial Biotechnology, AgroSciences and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, MoroccoLaboratory of Microbial Biotechnology, AgroSciences and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, MoroccoLaboratory of Microbial Biotechnology, AgroSciences and Environment, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh 40000, MoroccoPurpose Olive mill waste sludge (OMWS) is a solid by-product resulting from olive oil extraction, OMWS is usually left decanting in landfills causing environmental pollution and a significant loss of recyclable organic resources. This study aims to evaluate the feasibility of producing an organic amendment through treating OMWS with solar drying (SDy), which is a low-cost method, highly adapted to semi-arid and low-income countries.Method We investigated the effect of 90 days SDy on OMWS physico-chemical properties, then the agronomic efficiency of the resulting product was assessed under greenhouse conditions, using Zea mays as a crop model.Results The SDy treatment significantly reduced OMWS initial moisture and the C/N ratio, while the nutrient content of the final product was improved. Pot trial under greenhouse conditions revealed that the application of SDy-OMWS improved the soil physico-chemical properties. The initial application decreased soil pH from 8.19 to 7.06, and soil phosphorus (P), potassium (K), iron (Fe) and zinc (Zn) increased by 209%, 162.4%, 290% and 270% respectively compared to the unamended control. SDy-OMWS application initially induced a delayed seed germination and plant growth at early stages, which was followed by a significant improvement of plant above and below ground traits, including photosynthetic activity, stomatal conductance, and root parameters (RL, RSA and RV).Conclusion Overall, SDy significantly reduced the C/N ratio, moisture, and improved the nutrient content of OMWS. Despite improving soil fertility, SDy-OMWS application negatively affected the plant development at early stages. However, such effect was completely alleviated at the end of the experiment.http://ijrowa.khuisf.ac.ir/article_687584_b621ab7e82c2b5f644fece79b97e88ac.pdfolive mill waste sludgeorganic amendmentsoil toxicityplant developmentmicroorganisms |
| spellingShingle | Bouhia Youness Lyamlouli Karim Yedir Oudouch El Mehdi El Boukhari Mohamed Mohamed Hafidi Agronomic assessment of solar dried recycled olive mill sludge on Maize agrophysiological traits and soil fertility International Journal of Recycling of Organic Waste in Agriculture olive mill waste sludge organic amendment soil toxicity plant development microorganisms |
| title | Agronomic assessment of solar dried recycled olive mill sludge on Maize agrophysiological traits and soil fertility |
| title_full | Agronomic assessment of solar dried recycled olive mill sludge on Maize agrophysiological traits and soil fertility |
| title_fullStr | Agronomic assessment of solar dried recycled olive mill sludge on Maize agrophysiological traits and soil fertility |
| title_full_unstemmed | Agronomic assessment of solar dried recycled olive mill sludge on Maize agrophysiological traits and soil fertility |
| title_short | Agronomic assessment of solar dried recycled olive mill sludge on Maize agrophysiological traits and soil fertility |
| title_sort | agronomic assessment of solar dried recycled olive mill sludge on maize agrophysiological traits and soil fertility |
| topic | olive mill waste sludge organic amendment soil toxicity plant development microorganisms |
| url | http://ijrowa.khuisf.ac.ir/article_687584_b621ab7e82c2b5f644fece79b97e88ac.pdf |
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