The organisation says South Africa must focus on profitable wheat production after the government left the wheat tariff framework unchanged.
The National Corn Growers Association says maritime fuel, sustainable aviation fuel and biobased products could create billions of bushels of new demand for US corn as growers face another difficult year.
The new system allows farmers to apply online for duty-free export access while grain markets continue to adjust to weaker corn demand.
The move gives Moroccan fertilizer exporters short term relief while the U.S. reviews its trade measures.
The new tax system links export duties to market prices while exempting high grade ammonium nitrate.