I am interested in the trend of soil organic carbon under rice-wheat system of south Asia. Many study comparing management systems show farm yard manure application, reduced- and no-tillage management increased SOC (as in the rest of the world). I am, however, having hard time to find a recent literature talking about trend of SOC in long-term experiments. Studies on some long-term experiments in India showed increase in SOC during 1984-2000. Do anyone have idea how SOC is responding to management systems over time in these and other long-term experiments in south Asia?
Rajan Ghimire
Babar my question is if it is increasing in last 20 years as indicated in some studies or decreasing as in rest of the world.
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