About 3 percent is used for miscellaneous purposes. Cropland makes up about threefourths of the acreage in the north and less than one- fourth in the south. This is an important cash- crop area. Soybeans, cotton, and wheat grown by highly mechanized methods are the major crops throughout the area.
Corn is an important crop in Missouri.
Rice is an important crop in Arkansas, Louisiana, and Mississippi, and sugarcane is important in southern Louisiana. Controlling surface water and artificially draining the wet soils are major concerns of management. The dominant soils are Aquepts, Aqualfs, Aquents, Udolls, and Udalfs. They are deep, medium textured and fine textured soils that have an udic or aquic moisture regime, a thermic temperature regime, and mostly smectitic or mixed mineralogy. The Hydraquents and Medisaprists are in the extreme southern part in Louisiana.