India’s soil organic carbon levels have plummeted to a critical danger zone of 0.3% to 0.6%, far below the recommended health standard of 1% to 1.5% [0.51]. This severe deficit stalls crop yields, as seen in the country’s major cotton belts where advanced genetically modified seeds fail to reach their full potential in carbon-starved earth. In response, agricultural institutions are rolling out low-cost, decentralized biochar systems to help farmers convert crop waste into carbon-rich soil additives. Concurrently, environmental bodies are scaling up the use of Fermented Organic Manure from biogas plants to rebuild the soil’s biological matrix and water retention capability.

Source: https://forumias.com/blog/answered-examine-the-impact-of-declining-soil-organic-carbon-on-cotton-productivity-in-india-can-genetically-modified-technologies-succeed-isolated-from-soil-health-restoration/