Effect of phosphorus-loaded biochar and nitrogen-fertilization on release kinetic of toxic heavy metals and tomato growth
| Autor: | Mamdouh A. Eissa, Saif Alharbi, Zheli Ding, Marzoq Hadi Al Fahd, Guangshuai Wang, Adel Ghoneim, Esmat F. Ali |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Nitrogen chemistry.chemical_element Plant Science 010501 environmental sciences 01 natural sciences Soil Solanum lycopersicum Metals Heavy Biochar Soil Pollutants Environmental Chemistry 0105 earth and related environmental sciences biology Phosphorus biology.organism_classification Pollution Soil quality Soil contamination Horticulture Biodegradation Environmental chemistry Charcoal Fertilization Loam Soil water Solanum 010606 plant biology & botany |
| Zdroj: | International Journal of Phytoremediation. 24:156-165 |
| ISSN: | 1549-7879 1522-6514 |
| DOI: | 10.1080/15226514.2021.1929825 |
| Popis: | In this study, we investigate the effect of nitrogen fertilizer application rates with and without phosphorus-loaded biochar (BCP) on the productivity of tomato (Solanum lycopersicum cv GS) planted on a contaminated soil based on pot and incubation experiments. The release kinetic of toxic metals as affected by BCP was also investigated. BCP at rate of 2% (w/w) and nitrogen levels (250 and 500 mg N kg-1) were added to sandy loam soil polluted with Cd, Pb, Zn, and Cu. The experiment consisted of five treatments including: Control (C), nitrogen a rate of 250 (N250), or 500 mg kg (N500), BCP + N250, and BCP + N500. Maximum tomato growth was achieved in the soil that was treated with BCP + N500, followed by BCP + N250, while lowest one was observed in the control. Tomato yield as affected by the BCP and N-fertilization was in the descending order: BCP + N500 > BCP + N250 > N500 = N250 > C. The addition of N250, N500, BCP + N250, and BCP + N500 increased the fruit yield by 24, 31, 35, 58% in comparison with the control. Levels of Zn, Cu, and Pb in tomato fruit was in the descending order: N500> N250 > C > BCP + N500 > BCP + N250. The combined application of BCP and N-fertilization augmented the availability and uptake of essential nutrients and effectively reduced those of toxic ones. The addition of BCP + N250 decreased Zn, Cu, Cd, and Pb content in fruit of tomato by 16, 10, 54, 54, and 58%, respectively, compared to the control soil, while these decreases were 13, 16, 60, 60, and 72% in the case of BCP + N500. BCP succeeded significantly in reducing the release of toxic chemicals, which ultimately may restrict the transfer of toxic chemical to the food chain solution. Novelty statement Tomato grown on metal-contaminated soils contains high levels of toxic metals. Phosphorus-loaded biochar (BCP) reduced the negative effects of high inorganic-N rates by reducing the release of toxic metals to the soil solution. BCP enhanced the soil quality indicators and increased the soil microbe's activity. |
| Databáze: | OpenAIRE |
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