Any rapid trend toward "super farms," according to this most recent study, would call for greater cost economies from size than appear to exist at the present time. Most such economies are realized within the 300-acre range.
Beneke, Raymond R. and Alexander, Jack M.
"Little Pressure for "Super Farms" in Iowa,"
Iowa Farm Science: Vol. 15
, Article 2.
Available at: http://lib.dr.iastate.edu/farmscience/vol15/iss1/2