Overheated planet update: Last year, CO2 made Iowa weather so devastatingly bad that Iowa farmers only harvested 10 million more tons of grain than Canada's farmers did

Iowa is a lean, mean, grain-growin’ machine | Grist

Iowa is an agricultural superpower, simultaneously eclipsing Canada in grain production and challenging China in soybean production. No, these are not mathematical errors.

Last year, Iowa’s farmers harvested 55 million tons of grain, while Canada’s farmers harvested only 45 million tons. Over the last five years, Iowa has averaged 57 million tons a year to Canada’s 49 million tons.

While Canada has more than 30 million acres of grain, mostly wheat, Iowa has only 13 million acres of grain, almost entirely corn. The difference in yield per acre is huge: just 1.4 tons in Canada against more than four tons in Iowa.
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The bottom line: Iowa is at the heart of the U.S. Corn Belt, a phenomenally productive piece of agricultural real estate. It enables the United States, with only 4 percent of the world’s people, to produce 40 percent of the world’s corn, the leading grain, and 35 percent of its soybeans.