Monsanto’s Weed Killer, Dicamba, Divides Farmers
Farmers planted a new kind of seed on 25 million acres of soybean and cotton fields this year. Developed by Monsanto, the seeds, genetically modified to be resistant to a weed killer called dicamba, are one of the biggest product releases in the company’s history.
But the seeds and the weed killer have turned some farmers — often customers of Monsanto, which sells both — against the company and alarmed regulators.
Farmers who have not bought the expensive new seeds, which started to appear last year, are joining lawsuits, claiming that their crops have been damaged by dicamba that drifted onto their farms. Arkansas announced a 120-day ban of the weed killer this summer, and it is considering barring its use next year after mid-April. Missouri briefly barred its sale in July. And the Environmental Protection Agency, not known for its aggressiveness under President Trump, is weighing its own action.
“I’m a fan of Monsanto. I’ve bought a lot of their products,” said Brad Williams, a Missouri farmer. “I can’t wrap my mind around the fact that there would be some kind of evil nefarious plot to put a defective product out there intentionally.”
Yet he has been dismayed both by damage to his soybean crops, which were within a wide area of farmland harmed by dicamba, and by the impact even to trees on his property. Leaves, he said, were “so deformed you couldn’t even really identify the differences between them.”
The dispute comes as American agriculture sits at a crossroads.
Genetically modified crops were introduced in the mid-1990s. They made it possible to spray weed killers — chiefly Monsanto’s Roundup — on plants after they emerged from the ground, ridding fields of weeds while leaving crops undamaged.
But weeds are becoming more resistant to Roundup, so the industry is developing seeds that are tolerant to more herbicides. Environmentalists and some weed scientists worry that making seeds resistant to more weed killers will increase the use of pesticides.
Monsanto and another company, BASF, have also developed a new, less volatile version of dicamba, which has been around for decades. DowDuPont, which has its own dicamba-resistant seed, is introducing crops resistant to 2,4-D, another old herbicide.
Monsanto formally challenged Arkansas’ ban earlier this month, insisting that 99 percent of its customers were satisfied. It plans to double the use of its new dicamba-resistant soybeans seeds to 40 million acres by next year.
“New technologies take some time to learn,” said Scott Partridge, Monsanto’s vice president for global strategy. “Thus far, what we’ve seen in the field, the vast majority, more than three-quarters of them, has been due to not following the label.”
The company has also claimed that Arkansas’ decision was “tainted by the involvement” of two scientists tied to a rival, Bayer. Considering that Bayer is acquiring Monsanto, it was an awkward step. Bayer called the men “pre-eminent weed scientists.”
Some foresaw drift problems with dicamba.
For years, Steve Smith, once a member of a dicamba advisory panel set up by Monsanto, urged the company to change course. Mr. Smith, the head of agriculture at Red Gold, a tomato processor based in Indiana, aired his concerns at a congressional hearing in 2010.
“The widespread use of dicamba is incompatible with Midwestern agriculture,” he said in his testimony. “Even the best, the most conscientious farmers cannot control where this weed killer will end up.”
Photo from Flickr.