Biochar-mediated improvements in soil fertility and wheat (Triticum Aestivum L.) productivity in the Indo-Gangetic Plains long-term benefits of biochar on soil fertility and wheat (Triticum Aestivum L.) productivity in the Indo-Gangetic Plains.
Sharma G, Gupta RK, Nishihara E, Inubushi K, Sudo S
Soil Health
That smoke haze hanging over South Asian fields each autumn represents 500–900 million tons of crop residue going up in flames — and this research shows turning that waste into biochar instead can dramatically grow more wheat while locking carbon back into the soil.
Scientists took the rice leftovers that farmers typically burn after harvest, turned them into a charcoal-like material called biochar, and mixed it into wheat fields. Adding just 5 tons of biochar per acre-sized plot caused wheat plants to grow taller, produce more grain-bearing heads, and ultimately yield about a third more grain than fields without it. The soil also held water better and became easier to work — benefits that compound over time.
Key Findings
Biochar applied at 5 t/ha increased wheat grain yield by 32.8% and grains per spike by 40.6% compared to non-biochar treatments.
The same application rate improved tillers (grain-bearing shoots) by 49.8% and leaf area index by 43.3%, reflecting significantly healthier plant development.
Annual open burning of crop residues releases ~1.5 billion tons of CO₂ equivalents and cuts soil nitrogen by 40–60%; biochar conversion directly counters both losses.
chevron_right Technical Summary
Adding biochar made from rice husks or rice straw to farm fields boosted wheat yields by nearly 33% while improving soil health — a win-win that also keeps farmers from burning crop waste in the open air.
Abstract Preview
The annual burning of 500-900 million tons of crop residues releases nearly 1.5 billion tons of CO₂ equivalents and severely degrades soil quality, causing 25-30% losses in soil organic carbon and ...
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