Carbon sequestration in two Brazilian Cerrado soils under no-till

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This study evaluated the potential of two representative soils in the Brazilian Cerrado to act as carbon sources or sinks under different tillage systems. The soils, a sandy clay loam and a clayey Oxisol, were studied under three tillage systems - conventional tillage (CT), reduced tillage (RT), and no-till (NT) - for five to eight years. The carbon stock of native, uncultivated soils provided a baseline for comparing the tillage treatments. While soil carbon under conventional tillage did not decrease significantly from the native soil levels, soil under no-till had increased carbon sequestration. Widespread adoption of no-till methods in the region could result in a contribution toward global climate change mitigation.


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Carbon sequestration, Conservation agriculture, Tropical zones, Sustainable agriculture, Conservation tillage, Soil organic matter, C sequestration, No-till, Tropical soils, Ecosystem Field Scale


Soil and Tillage Research 86(2): 237-245