Illustrations and Tables/ Figure 1
| Figure 1: | Major watersheds in south-central Minnesota. |
| Figure 2: | Average corn yield across 21 site years with four tillage systems for corn after soybean. |
| Table 1: | Residue management/yield performance indicators for corn and
for soybeans in a corn-soybean rotation on soils with slopes <4% and >4% in south-central Minnesota. |
| Table 2: | Corn and soybean yields and soil test P (Bray P1) on a high P-testing soil as influenced by tillage and P management systems. |
| Table 3: | Corn and soybean yields and soil test P (Bray P1) on a low P-testing soil as influenced by tillage and P management systems. |
| Table 4: | Surface residue accumulation in May after planting corn as influenced by tillage for corn. |
| Table 5: | Corn yield after soybean from high and low P-testing soils as affected by tillage system. |
| Table 6: | Soybean yield after corn from high and low P-testing soils as affected by tillage system. |
| Table 7: | Soil test P (0-2”) in 2002 on a high P-testing soil as affected by tillage and P placement. |
| Table 8: | Soil test P (0-2”) in 2002 on a low P-testing soil as affected by tillage and P placement. |
| Table 9: | Corn yield, soybean yield, and surface residue coverage as affected
by tillage systems for corn and soybeans and in-season row cultivation of corn. |
| Table 10: | Effect of tillage following soybeans on corn yield and surface
residue coverage and on soybean yield and residue coverage in the following year. |
| Table 11: | Effect of tillage following corn on soybean yield and surface
residue coverage and on corn yield and residue coverage in the following year. |
| Table 12: | Effect of in-season row cultivation on corn yield and soybean yield in the following year. |
| Table 13: | Second-year corn yield and residue cover in 2004 as affected by tillage system for corn in 2003 and 2004. |
| Table 14: | Soybean yield in 2004 after second-year corn as affected by tillage system for corn in 2002 and 2003. |
| Table 15: | Corn yield as affected by tillage system and time/placement of N. |
| Table 16: | Corn yield as affected by tillage system and yield level across 29 site-years. |
Figure 1. Major watersheds in south-central Minnesota.
