Much o the cotton produced in Oklahoma and West Texas is produce on land that is of a coarse soil texture, sloping, and subject to considerable wind and/or water erosion. Various forms of conservation tillage have been practiced by innovation producers for many years, however, increased emphasis will be placed on conservation tillage and residue management in the future due to provision sin the 1985 farm bill. The food security act of 1985 mandated that land classified as "highly erodible" must have a conservation plan approved by 1990, and these plans must be implemented by 1995. Standards using determinations of erodibility index and T-Values have been developed to aid in classification these soils, but interpretation of these criteria differ from county to county resulting in some soil series being classified as highly erodible in one county and not highly erodible in another. It is estimated that 60 to 80 percent of the dryland cotton acreage in Oklahoma and West Texas is classified as highly erodible and if cotton production is to continue on these soils, it must be produced under some type of residue management program. Some of these conservation plants are no more complicated than delaying cotton stalk shredding until march of the following year, but in some areas, a system of conservation tillage must be devised and put into practice.