Excerpt from the report Summary: Costs and returns data for 1947 through 1959 are presented in this report for three size types of cotton farms in the San Joaquin Valley of California. Between 1947-49 and 1959, net farm incomes on the three types of farms trended upward. The trend was greatest on the large cotton-general farms and least on the cotton-specialty farms. The upward trend in net farm income was due mainly to increases in size (measured in inputs) of farm and increased physical efficiency. Increased physical efficiency contributed more to the upward trend than did the increase in size of farm as measured by inputs. After about 1952, price changes generally had a downward effect on net farm income
