Crop Rotation – What is its value?

University of Illinois conducted a four year crop rotation study with 12 site years of data showing the following results:


  1.  Soybean growth after 2nd year corn was 6% better than a corn-soybean rotation.

  2. 2nd year corn after soybeans yielded 7% less than the first year corn after soybeans.

  3. Continuous corn yielded 10% less than the corn in a corn-soybean rotation.