The impact of tillage and cover crops on SOC sequestration (net increase) or loss has been the focus of many
studies since these management techniques contribute to atmospheric C loss or sequestration. Olson et al. [1]
found cover crops did not affect crop yields but did increase SOC stocks in the root zone for all tillage treatments.
In an attempt to further document the long-term impacts of cover crops this study was extended for 4 additional
years. The objectives of the second phase were to evaluate the long-term effects of: 1) cover crops on
SOC sequestration rate as a result of 12-year of cover crops on NT, CP, and MP tillage systems, 2) the effects of
cover crops on long-term corn and soybean yields, and 3) the effect of cover crops on maintenance and restoration
of SOC stock and soil productivity of previously eroded soils in southern Illinois.