Economic Feasibility of Carbon Sequestration with Alternative Tillage Systems
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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.