The most common double crop options are soybean, sorghum, and sunflower. Other possibilities include summer annual forages and specialized crops such as proso millet or other short-season summer crops – even corn. Cover crops are also an option for planting after wheat.

A lot can change in 30 years. In the early 1990s, Perrysville, Ohio, brothers Steve and Carl Ayers were adopting no-till and cover crops on 700 acres of continuous corn on their 650-cow dairy operation, creating a standard for other growers in the area to emulate.