Which crop rotations are typically monitored in the EOF study?

• A. Continuous corn
• B. Corn-soybean or corn-soybean-wheat rotations
• C. Corn-wheat rotation
• D. Soybean-cotton rotation

Answer: (B)

Crop rotation patterns in Ohio fertilizer studies reflect how farmers actually manage soil nutrients over time. In this region, corn is commonly grown with soybeans, and sometimes a wheat year is added, to balance nitrogen, improve residue cover, and reduce pest pressures. The EOF study therefore monitors corn-soybean and corn-soybean-wheat rotations because these rotations represent typical practice and provide meaningful data on how nitrogen dynamics and fertilizer needs change across years. Continuous corn and rotations that aren’t common in Ohio (like soybean-cotton) don’t capture the same real-world cropping patterns, so they aren’t the focus of the monitoring.