Corn and soybean acreage has risen since 1990, while wheat and cotton are down
Since 1990, combined acreage planted to corn, wheat, soybeans, and upland cotton in the United States has ranged from 218 million to 242 million acres. Policy changes increased planting flexibility provided to farmers starting in the 1990s, which has allowed them to respond to market signals in their cropping choices. Overall, acreage has generally been higher in recent years, with the four highest combined annual planting totals for these crops since 1990 occurring in 2011-14 when prices were higher. Reduced acreage in 2015 reflected, in part, lower prices.
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