The same study reports that corn and soybean returns from organic systems at the Neely-Kinyon Long-Term Agroecological Research site in Iowa, measured over a three-year period, were significantly greater than returns in conventional corn and soybean crop rotations. The organic rotations were more economical even when market-based organic premiums were excluded from the analysis. “Returns to land, labor, and management were higher in the organic rotations regardless of whether an organic price premium was received
or not.” (Delate et al. 2003)