Crop rotation is the practice of growing a series of different types of crops in the same area in sequential seasons. Crop rotation gives VARIOUS nutrients to the soil. A traditional element of crop rotation is the replenishment of NITROGEN through the use of green manure in sequence with cereals and other crops. Crop rotation also mitigates the build-up of pathogens and pests that often occurs when one species is CONTINUOUSLY cropped, and can also improve soil structure and fertility by alternating deep-rooted and shallow-rooted plants. Crop rotation has increased in the south in the last 10 years due to the changing tides of the ever changing grain price. With the increase in corn acres across the south, as well as the increase in irrigation, we have seen a steady increase in yields. There are many studies showing yield increases of 10 to 15 percent in SOYBEANS and corn when rotation is utilized. Rotations also help with a reduction in nematodes, weeds and diseases. Northern Leaf BLIGHT is a good example of a disease that has increased over the last several years, and can be reduced by rotating corn and soybeans.