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Integrated Crop–Livestock Systems in the U.S. Corn Belt

^a Dep. of Horticulture & Crop Science, The Ohio State Univ., Columbus, OH 43210
^b Dep. of Crop Sciences, Univ. of Illinois, Urbana, IL 61801

View larger version (16K): [in this window] [in a new window]   Fig. 1. (A) Mean cattle numbers, and land area of (B) harvested hay and (C) oat since 1945 in the midwestern U.S. Corn Belt. Statistics were taken from the states of Ohio, Indiana, Illinois, Iowa, Minnesota, and Wisconsin (National Agricultural Statistics Service, 2000).

View larger version (19K): [in this window] [in a new window]   Fig. 2. Mean land area of harvested corn and soybean since 1945 in the midwestern U.S. Corn Belt. Statistics were taken from the states of Ohio, Indiana, Illinois, Iowa, Minnesota and Wisconsin (National Agricultural Statistics Service, 2000).

View larger version (7K): [in this window] [in a new window]   Fig. 3. Schematic diagram of an integrated farming system used at the Dudley Smith Farm in Illinois. The farming system is replicated three times across the land unit and consists of four treatments: CLP, cropland pasture grazed in winter and planted with corn or oat in summer (19 ha); CSP, perennial cool-season grass pasture (6 ha); WSP, perennial warm-season grass pasture (2 ha); and CC, continuous corn (2 ha).