Central Illinois corn and soybean farmer Tim Seifert loads his field planter with Syngenta insecticide for refuge corn while planting DEKALB seed corn, left front, for spring planting .

New Evidence Shows Bayer, Syngenta Fought Scientists For Data On Bee Study

The pesticide giants also encouraged the academics to study their own research on bees, which showed no harm from their products; only to be rebuffed by researchers.