摘要：Sequestration of carbon has gained increased attention in recent years because of environmental and economic motives. This study examined the economic feasibility of using reduced-tillage (RT) and notillage (NT) rather than conventional-tillage (CT) to sequester soil carbon with the use of either anhydrous ammonia (NH3), ureaammonium nitrate solution (UAN), or urea for a grain sorghum-soybean rotation. The results show that RT with NH3 had the highest net return but not the highest level of carbon sequestration. Carbon credits ranging from $0.00 to $77.23/ton of C/year were needed to entice producers to adopt either RT Urea or NT NH3, the systems that sequestered the highest and second highest amount of carbon per year, depending upon the farming system originally being used.
