A new study reveals how manganese-modified biochar helps beneficial fungi break down agricultural residues and accelerate the formation of valuable humic substances, offering a promising approach to sustainable organic waste recycling and soil improvement.
Agricultural residues such as wheat straw are produced in enormous quantities worldwide. Although these materials contain valuable organic carbon, their tough plant fibers resist decomposition, making efficient recycling a major challenge. Now, researchers have discovered that combining manganese-modified biochar with white-rot fungi can significantly improve the conversion of agricultural waste into humic substances, which are essential for soil fertility, carbon cycling, and ecosystem health.
The study, published in Biochar, demonstrates that this combination accelerates the breakdown of plant materials while promoting the formation of more complex and stable organic compounds.
"Agricultural waste is not simply something to dispose of. It is a valuable carbon resource that can be transformed into materials that support healthier soils," said the research team. "Our findings reveal how manganese-modified biochar can work together with beneficial fungi to make this transformation more efficient."
Humic substances are important components of soil organic matter. They help improve soil structure, support nutrient retention, and regulate carbon cycling. However, their natural formation is slow. Accelerating this process, known as humification, could provide new opportunities to recycle agricultural residues into valuable soil amendments.
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