4.7 Article

Biochar improves the performance of Avena sativa L. grown in gasoline-polluted soils

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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 30, 期 11, 页码 28791-28802

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SPRINGER HEIDELBERG
DOI: 10.1007/s11356-022-24127-w

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Bioremediation; Contamination; Oat; Petroleum; Petroleum derivatives; Phytotoxicity

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This study investigated the effects of gasoline contamination on oat plants and tested the potential benefits of adding biochar to polluted soils. The results showed a negative impact of gasoline on oat plants, but the addition of biochar significantly reduced these negative effects.
This study investigated the effect of soil contamination by different concentrations of gasoline on oat (Avena sativa L.) and tested the effect of biochar supply to the polluted soils on the performance of oat plants. Oat seeds were sowed in contaminated soils with different concentrations of gasoline: 0% (control), 1%, 2%, 6%, and 10% (v/w), and grown for 2 weeks. Germination, fresh weight, root and stem length, photosynthetic parameters (i.e., chlorophyll content, PIABS, F-V/F-M, and NDVI), and total antioxidant power were analyzed. The results showed a remarkable negative effect on almost all the investigated parameters starting from the gasoline concentration of 6%. Based on these results, a new experiment was run by adding 5% (w/w) biochar (a carbon-rich byproduct of wood biomass pyrolysis) to the 6% and 10% polluted soils to test whether adding biochar had a beneficial effect on oat performance. The results showed that biochar supply greatly reduced the negative effects caused by gasoline on all the investigated parameters.

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