Source: Sam Bloch, NEW FOOD ECONOMY, 5/2/19


Weeds are the bane of a farmer’s existence—the “most important of all crop pests,” as one scientist put it. They kill crops by hogging nutrients in the soil, water, space and light. Worldwide, they are the largest source of yield losses. Since the mid-1990s, many row crop farmers have knocked out their weeds through genetics. Specifically, by planting bioengineered cotton, corn, and soybeans that withstand herbicides like glyphosate—the active ingredient in Roundup—and, more recently, like dicamba and 2,4-D.

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