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 man- agement were higher in the organic rotations regardless of whether an organic price premium was received
or not.” (Delate et al. 2003)