Regional upland cotton acreage and yield response equation. were estimated by ordinary least squares. Cotton production response to price is shown to depend upon the relative responses of acreage to price, yield to price, and yield to acreage. Exam. pies appear of ways the analysis may be used to help policymakers decide on price support and acreage control levels. Traditionally, percentage changes in acreage have been equated with percentage changes in production. However, it is shown that a 13-pcrcent change in cotton acreage harvested may be required to change production by 10 percent.