evidence: Glyphosate’s main use is in agriculture. Weedkillers containing it are used on nearly half of all planted acres of corn and soybeans in the U.S., though much of those are not grown for human consumption. They’re also used on acres of farmland where wheat, oats, fruits and cotton are grown. Pesticide residue testing from the FDA found glyphosate residues on a wide variety of crops, including oats, soybeans, cranberries, grapes, raisins, oranges, apples, cherries and beans. Data from the U.S. Geological Survey shows several counties across the country with higher than average glyphosate usage. [...] - Nueces County, Texas, had the single highest glyphosate usage rate of U.S. counties, with more than 1,100 pounds sprayed per square mile. [...] "Glyphosate is the most widely used chemical weedkiller in human history because of genetic engineering," said Dave Murphy, the founder of Food Democracy Now, an advocacy group that tests glyphosate in food. "It’s sprayed ubiquitously and Monsanto has, for decades, just maintained that it’s the safest agricultural chemical ever made."