The Far West Region of the United States cotton belt includes the states of Arizona and California. The predominate acreage (70 %) of Arizona's production is located in Maricopa and Pinal Counties with additional production located in the Parker, Yuma and Safford areas. California's 1995 acreage of 1.3 million acres is dominated by the planting in the six counties of the southern San Joaquin Valley. This acreage represents ninety seven percent of California's total production. The other areas of production are the Imperial and Riverside Counties, and more recently, acreage planted in the Sacramento Valley (Source: Pink Bollworm Program). In addition, a significant percentage of US Pima is produced in this two state region.