A state official in Arkansas who's led a national effort to limit damage from a controversial herbicide has recently found his tractors damaged and hay bales burned.
Across the Midwest, millions of acres of farmland have been damaged by dicamba, an herbicide that can harm crops not engineered to withstand it. There are so many cases, regulators can't keep up.
Scientists at four leading universities have seen their soybean experiments injured by a stealthy vandal: drifting fumes from a weedkiller called dicamba, now popular among farmers.
In the long-running war between farmers and weeds, it's advantage, weeds. Scientists in Kansas have found examples of the dreaded pigweed that are immune to the newest weed-killing technologies.
Some farmers say they're buying a popular new soybean seed partly because they're afraid of crop damage from herbicide drift. A new lawsuit claims the seed maker is violating antitrust laws.
The Environmental Protection Agency has given farmers the OK to continue to spray the controversial weedkiller dicamba. The chemical is prone to blowing in the wind and damaging other vegetation.
Many farmers are defying efforts by regulators to strictly limit the use of dicamba, a popular weedkiller that's prone to drifting into neighboring fields.
In Arkansas, a regulatory committee of farmers and small-business owners banned the latest weed-killing technology from the giant agrichemical company. Monsanto is taking them to court.
Scientists are accusing the seed and pesticide giant of denying the risks of its latest weedkilling technology. Monsanto has responded by attacking some of those critics.