Lignosulfonate Improves Soil Fertility by Promoting Exchangeable Al3+ Immobilization and Facilitating Its Interaction with Soil Enzymes through Active Functional Group Surfaces
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View abstract on PubMed
Summary
This summary is machine-generated.Calcium lignosulfonate (CL) effectively mitigates soil acidification by reducing toxic aluminum, improving soil buffering capacity, and boosting plant growth. This sustainable alternative outperforms traditional lime in enhancing soil health and agricultural productivity.
Area Of Science
- Soil Science
- Environmental Chemistry
- Agronomy
Background
- Soil acidification poses a significant threat to soil health and sustainable agriculture.
- Conventional mitigation strategies often have limitations, necessitating novel and effective alternatives.
Purpose Of The Study
- To evaluate the efficacy of calcium lignosulfonate (CL) as a soil amendment for acidic soils.
- To investigate the interaction mechanisms between CL and soil components using molecular modeling.
Main Methods
- Pot experiments were conducted on three types of acidic soils (Rs, K2j, and J2s).
- Physicochemical properties, soil exchangeable acidity, and enzyme activity were analyzed.
- Molecular modeling calculations were used to elucidate interaction mechanisms.
Main Results
- Calcium lignosulfonate (CL) demonstrated superior performance compared to lime in reducing phytotoxic exchangeable aluminum (Al3+).
- CL enhanced soil acidification buffering capacity, improved soil fertility, and increased plant biomass accumulation.
- Mechanisms involved strong competitive adsorption of Al3+ by CL functional groups and enhanced soil enzyme interactions.
Conclusions
- Calcium lignosulfonate is a promising, sustainable alternative for mitigating soil acidification.
- CL application leads to improved soil physicochemical properties and enhanced agricultural productivity.
- Findings offer valuable insights for developing efficient soil amendments to combat soil acidification.
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