This paper discusses a study attempting to quantify potential soil C sequestration rates for different crops in response to decreasing tillage intensity or enhancing rotation complexity, and to estimate the duration of time over which sequestration may occur. The authors found that switching from conventional tillage to no-till can sequester increasing amounts of CO2 from the atmosphere. Sequestration rates were found to peak in 5 to 10 years. The results of this study can be used in spatial modeling analyses to predict global sequestration potentials.