Long‐Term Impacts of Cropping Systems and Landscape Positions on Claypan‐Soil Grain Crop Production

Sustainable grain crop production on vulnerable claypan soils requires improved knowledge of long‐term impacts of conservation cropping systems (CS). Therefore, effects of CS and landscape positions (LP) on corn ( Zea mays L.), soybean [ Glycine max (L.) Merr.], and wheat ( Triticum aestivum L.) production were evaluated from 1991 to 2010 on a claypan soil in Missouri. Replicated treatments were three CS (2‐yr mulch till corn–soybean [MTCS],...