Trost, in 2013, in the journal Agronomy for Sustainable Development, reviewed 22 studies looking at carbon sequestration and rotation that considered irrigated versus dry land and found that the irrigated land, given the capacity for improved crop rotation and the resulting soil health and stubble development, resulted in an average of 11% to 35% increase in soil carbon sequestration capacity in semi-arid regions such as Canada.
On February 6th, 2024. See this statement in context.