Sign up for email alerts of new Fluid Journal issues!
Fluid Journal : Fluid Journal 1999-2001
2 Fluid Journal Spring 1999 years improved growth of the next 10 crops with no evidence of decline in this response with time. The results suggest that this crop growth response was probably caused by changes in soil properties and soil nutrient availability." In Figure 1, 150 percent residue is compared with 0 percent residue. Note that only 54 lbs/A of nitrogen (N) was applied. This explains the low yields. At this low fertility level it was probably easier to measure the effect of the residue treatments made earlier. The difference in yields between treatments illustrates how corn residue can affect soil productivity for at least 10 years. As Power's report suggests: "This leads us to believe that the previous greater crop residue amounts improved some soil physical, chemical, or biological properties important to crop production." Indeed, after soil samples were taken in 1992, there were changes in soil properties as clearly shown in Table 1. Residues key Sufficient documentation is making it apparent that the long-term benefits of proper residue management are improved soil quality and increased yields. Power's studies offer convincing evidence that corn residues play a key role in maximizing soil productivity (MSP). There's nothing mystical about MSP. It's a relatively simple program. Residues are chopped. Nutrients are applied. Finally, residues are incorporated by tillage equipment. These Nebraska studies confirm that incorporated residues will contribute long-lasting improvements in soil quality---another step toward MSP.
Fluid Journal 1996-1998
Fluid Journal 2002-2004