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 2^nd year corn was 6% better than a corn-soybean rotation.
2. 
   2^nd 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.