Can the Corn Belt farmer prepare seedbeds for corn more cheaply without plowing and still produce as good a crop as he can by plowing? Many attempts have been made in past years to substitute lighter draft implements for the plow. Listing has been used in the Great Plains for many years. More recent attempts to stir the soil without turning it have given pretty good results in Nebraska and other states in the Wheat Belt. And during the past 2 or 3 years a scheme to discard plows entirely and prepare seedbeds with a disk harrow has received wide publicity.
Norton, R. A.; Browning, G. M.; Bower, C. A.; and Davidson, J. B.
"Plows Testify Again,"
Farm Science Reporter: Vol. 6
, Article 2.
Available at: http://lib.dr.iastate.edu/farmsciencereporter/vol6/iss2/2