Potential short-term negative versus positive effects of olive mill-derived biochar on nutrient availability in a calcareous loamy sand soil
| Autor: | Jamal Elfaki, Azzaz Alazzaz, Mutair A. Akanji, Hesham M. Ibrahim, Abdelazeem Sh. Sallam, Munir Ahmad, Adel R.A. Usman, Mohammad I. Al-Wabel |
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| Rok vydání: | 2020 |
| Předmět: |
Time Factors
Soil pH 010501 environmental sciences 01 natural sciences Soil chemistry.chemical_compound Nutrient Sand Agricultural Soil Science Biochar Pyrolytic carbon Minerals Multidisciplinary Thermochemical Conversion Eukaryota Olives Agriculture 04 agricultural and veterinary sciences Plants Hydrogen-Ion Concentration Physical sciences Chemistry Experimental Organism Systems Charcoal Environmental chemistry Shoot Medicine Agrochemicals Pyrolysis Calcareous Research Article Science Ecology and environmental sciences Research and Analysis Methods Zea mays Fruits Model Organisms Animal science Plant and Algal Models Olea Ammonium Grasses Fertilizers 0105 earth and related environmental sciences Soil science Edaphology Organisms Biology and Life Sciences Nutrients Maize chemistry Loam Animal Studies 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Soil chemistry |
| Zdroj: | PLoS ONE PLoS ONE, Vol 15, Iss 7, p e0232811 (2020) |
| ISSN: | 1932-6203 |
| Popis: | In the present work, the olive mill solid waste (OMSW)-derived biochar (BC) was produced at various pyrolytic temperatures (300-700°C) and characterized to investigate its potential negative versus positive application effects on pH, electrical conductivity (EC), and nutrients (P, K, Na, Ca, Mg, Fe, Mn, Zn, and Cu) availability in a calcareous loamy sand soil. Therefore, a greenhouse pot experiment with maize (Zea mays L.) was conducted using treatments consisting of a control (CK), inorganic fertilizer of NPK (INF), and 1% and 3% (w/w) of OMSW-derived BCs. The results showed that BC yield, volatile matter, functional groups, and zeta potential decreased with pyrolytic temperature, whereas BC pH, EC, and its contents of ash and fixed carbon increased with pyrolytic temperature. The changes in the BC properties with increasing pyrolytic temperatures reflected on soil pH, EC and the performance of soil nutrients availability. The BC application, especially with increasing pyrolytic temperature and/or application rate, significantly increased soil pH, EC, NH4OAc-extractable K, Na, Ca, and Mg, and ammonium bicarbonate-diethylenetriaminepentaacetic acid (AB-DTPA)-extractable Fe and Zn, while AB-DTPA-extractable Mn decreased. The application of 1% and 3% BC, respectively, increased the NH4OAc-extractable K by 2.5 and 5.2-fold for BC300, by 3.2 and 8.0-fold for BC500, and by 3.3 and 8.9-fold for BC700 compared with that of untreated soil. The results also showed significant increase in shoot content of K, Na, and Zn, while there was significant decrease in shoot content of P, Ca, Mg, and Mn. Furthermore, no significant effects were observed for maize growth as a result of BC addition. In conclusion, OMSW-derived BC can potentially have positive effects on the enhancement of soil K availability and its plant content but it reduced shoot nutrients, especially for P, Ca, Mg, and Mn; therefore, application of OMSW-derived BC to calcareous soil might be restricted. |
| Databáze: | OpenAIRE |
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