Potatoes are grown in a number of different regions of New South Wales. This study examines the supply responses of producers in five major potato growing shires. Three models of price response are examined. The most successful of these, the general Nerlove adaptive expectations model, is extended to test, first, how important the number of growers is in determining the acreage planted in each of the shires and, second, whether growers tend to expand or contract acreage in response to good yields in the immediate past.