AI Article Synopsis
- Soil acidification in managed ecosystems, like agricultural lands, is mainly driven by increased proton release from the breakdown of carbon, nitrogen, and sulfur compounds.
- Incorporating liming materials can help counteract soil acidity, which is crucial for soil health, food security, and human health.
- Biochar, made from organic residues, is gaining attention as a soil amendment that can help reduce acidity, improve soil fertility, and enhance productivity, primarily through its liming effects and benefits to microorganisms.
Article Abstract
Soil acidification in managed ecosystems such as agricultural lands principally results from the increased releasing of protons (H) from the transformation reactions of carbon (C), nitrogen (N) and sulphur (S) containing compounds. The incorporation of liming materials can neutralize the protons released, hence reducing soil acidity and its adverse impacts to the soil environment, food security, and human health. Biochar derived from organic residues is becoming a source of carbon input to soil and provides multifunctional values. Biochar can be alkaline in nature, with the level of alkalinity dependent upon the feedstock and processing conditions. This review covers the fundamental aspects of soil acidification and of the use of biochar to address constraints related to acidic soil. Biochar is increasingly considered as an effective soil amendment for reducing soil acidity owing to its liming potential, thereby enhancing soil fertility and productivity in acid soils. The ameliorant effect on acid soils is mainly because of the dissolution of carbonates, (hydro)-oxides of the ash fraction of biochar and potential use by microorganisms.
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| http://dx.doi.org/10.1016/j.envpol.2022.120632 | DOI Listing |
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