The outcomes of this experiment are dependent upon the environmental conditions present at each location. By spreading the experimental locations across several western KY counties and beginning the rotation with soybean for half of the locations and corn with the other half, we have spread the risk of experimental failure. We aim to provide KY producers with a better understanding of the complex interactions associated with the use of PL as a nutrient source for corn and soybean production systems. It is well known that animal manures improve the soil. The extent and consequences of these improvements are often not well documented. For example, does the use of PL alter weed, insect, or disease activity or growth stages and thus alter pesticide applications. How long or how many applications of PL must be applied prior to seeing an improvement in infiltration or plant available water. If PL does prove to reduce SCN nematode numbers and severity while providing plant nutrients and improving the overall soil, then specific fields with known problems could be targeted to reduce these numbers. This exhaustive research plans to document the benefits of using PL in a corn-soybean rotation and fully disclose any potential detriments that could negatively influence crop yields (weed and disease pressure). These answers would be a great benefit to producers that have access to PL and that have soils that are in “need of repair”.