Dan Forgey, agronomy manager for Cronin Farms in Gettysburg, SD, manages a dozen different rotations. Cronin Farms produces corn, soybeans, winter wheat, spring wheat, sunflowers, dry peas, lentils, millet and alfalfa on 8,500 acres of dryland and irrigated cropland.

Here is a typical cash crop rotation on Cronin Farms, which includes a cover-crop cocktail every fifth year:

Year 1 Spring wheat

Year 2 Winter wheat

Fall-seeded cover-crop mixture, such as canola, field peas, oats, radish, and flax

Year 3 Corn or dry peas

Year 4 Sunflower or winter wheat