
Lance Russell, left, and his father, Harold Kraus, check DuPont Co.'s Pioneer coated corn seed, in preparation for planting on their farm near Hays, Kansas.
However, if you take that same chemical and coat it on a seed, then plant that seed in the ground, it ceases to be pesticide — at least according to government regulators.
This issue of how to define a pesticide is at the center of a growing battle over a regulatory loophole that allows seeds coated with chemicals to be considered "treated articles," rather than pesticides.














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