Corn is by far the biggest US crop, and a network of corporations has sprouted up that profits handsomely from it. Companies like Monsanto and Syngenta sell the seeds and chemicals used to grow it, while Cargill, Archer Daniels Midland, Tyson, and their peers buy the finished crop and transform it into meat, ethanol, sweetener, and a range of food ingredients. Known in Washington as King Corn, the corn lobby wields formidable power in political circles.
And the economic pie these companies gorge on is massive. Pesticide Action Network's Heather Pilatic has an great post about how integrated pest management in US corn fields collapsed with the introduction of Monsanto's seeds engineered to contain the pesticide Bt and with the rise of Bayer's neonicotinoid-pesticide seed treatments—representing billions in annual sales to those companies. On the corn-processing side, government mandates ensure that a huge portion of the corn crop—currently, 40 percent—gets diverted into the fuel supply in the form of ethanol, a huge boon to ethanol giant Archer Daniels Midland.