When unapproved genetically modified wheat was found growing in Oregon earlier this year, it didn’t take long for accusations about how it ended up there to start flying. A flurry of initial finger-pointing cast potential blame on a federal seed vault in Fort Collins, Colo., which housed the same strain of wheat, developed by Monsanto Corp., for about seven years up until late 2011.
Across the Midwestern corn belt, a familiar battle has resumed, hidden in the soil. On one side are tiny, white larvae of the corn rootworm. On the other side are farmers and the insect-killing arsenal of modern agriculture.