Cooke, Stephen C. - Agricultural Economics and Rural Sociology Department, … - 1991
Iowa in corn, central Illinois in soybeans, the Washington Palouse and central North Dakota in wheat, and southern …Between 1974 and 1983, intertemporal cost efficiency for u.s. field crops increased about 1.4 to 1.2% percent for corn …, soybeans, and wheat and .2% per year for cotton. competitive advantage in 1983 was held by central Illinois and north central …