AI Article Synopsis
- Enriched biochars, like potassium- and magnesium-enriched variants, can reduce heavy metal contamination in soil while enhancing microbial and enzyme activities.
- The addition of biochar improved soil organic matter and significantly decreased arsenic availability, leading to better plant growth, particularly in basil.
- Overall, the use of enriched biochars can enhance nutrient uptake and promote healthier plant development even in soils contaminated with arsenic.
Article Abstract
Enriched biochar with improved properties and functionality can play a significant role in providing sustainable solutions for mitigating heavy metal contamination in soil. In this experiment, the effects of solid and enriched biochars (potassium-enriched biochar (BC-K), magnesium-enriched biochar (BC-Mg), both individually and combined) were examined on soil microbial and enzyme activities, as well as nutrient uptake by basil plants cultivated in a soil with three levels of arsenic (nontoxic, 50 mg As kg soil, and 100 mg As kg soil). Biochar-related treatments, increased soil organic matter (65-76%), while decreased availability of arsenic (6-55%) in the soil. The microbial biomass carbon (by about 123%) and soil basal respiration (by about 256%), and soil enzymatic activities (β-glucosidase, urease, alkaline phosphatase, and dehydrogenase) were enhanced by enriched biochars under arsenic toxicity. The solid and particularly enriched biochars decreased arsenic content and improved nitrogen and phosphorus contents of roots and shoots, root length, root activity, and root and shoot biomass in basil plants. Therefore, it is conceivable to suggest that enriched biochars are superior treatments for improving nutrient absorption rates and basil growth under arsenic toxicity through decreasing arsenic mobility and increasing soil microbial activities.
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| http://dx.doi.org/10.1080/15226514.2024.2416997 | DOI Listing |
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