Phytoavailability of Al and Zn in household ash-amended soils
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View abstract on PubMed
Summary
This summary is machine-generated.Household ashes from coal-wood combustion negatively impact plant growth and increase aluminum and zinc uptake. These ashes are not recommended for soil improvement or fertilization due to potential long-term metal mobilization by bacteria.
Area Of Science
- Environmental Science
- Soil Science
- Plant Biology
Background
- Household ashes from fuel combustion represent a waste product with largely unknown effects on soil health.
- Understanding the impact of these ashes on plant growth and metal bioavailability is crucial for sustainable waste management.
Purpose Of The Study
- To investigate the effects of household ashes (ASH1, ASH2) on plant biomass, aluminum (Al) and zinc (Zn) uptake, and metal mobilization in two soil types.
- To assess the role of Pseudomonas fluorescens in mobilizing Al and Zn in ash-amended soils.
Main Methods
- Pot experiment cultivating Raphanus sativus and Spinacia oleracea in sandy loam and sandy soils amended with 10% household ashes.
- Leaching experiments with Pseudomonas fluorescens to evaluate Al and Zn mobilization.
- Analysis of plant biomass, Al and Zn translocation factors (TF), and metal concentrations in soil.
Main Results
- Household ashes did not significantly affect Raphanus sativus biomass but increased Spinacia oleracea biomass.
- Highest Al TF was observed in Raphanus sativus (0.84 with ASH1), and highest Zn TF in Spinacia oleracea (3.03 with ASH1).
- Pseudomonas fluorescens significantly mobilized Al and Zn in all ash-amended soils, indicating potential for long-term bioavailability.
Conclusions
- Household ashes can enhance the biomass of certain plants like Spinacia oleracea but increase Al and Zn uptake.
- Bacterial mobilization of Al and Zn in ash-amended soils suggests risks for long-term soil contamination.
- Household ashes are not recommended for soil amelioration or fertilization due to potential adverse environmental impacts.
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