_:genid1 "Figure may be copyright protected and permission may be required. Contact original figure source for information"^^ . "fig-5-1-commodity_fig05" . "5.1"^^ . "U.S. Planted Area: Corn, Wheat, Soybeans, and Upland Cotton, 1990 to 2015"^^ . "(1 acre =\r\n0.404686 hectares). [Figure source: Adapted from U.S.\r\nDepartment of Agriculture Economic Research Service,\r\nbaseline related historical data.]"^^ . _:genid1 . . . . . .