The Steagall Amendment of 1941 (P.L. 77-144) required price support for many non-basic commodities at 85% of parity or higher. In 1942, the minimum rate was increased to 90% of parity and was required to be continued for two years after the end of World War II. The Steagall commodities included hogs, eggs, chickens (with certain exceptions), turkeys, milk, butterfat, certain dry peas, certain dry edible beans, soybeans, flaxseed and peanuts for oil, American-Egyptian (ELS) cotton, potatoes, and sweet potatoes.
References
Steagall Amendment of 1941 Wikipedia(Text) CC BY-SA