Serious Risks of Unchecked Herbicide Impacts Highlighted on Wildlife, People
“Dicamba herbicides pose significant threats to wild plants and the wildlife that depend upon them — even when used as prescribed on their labels,” said Lekha Knuffman, agriculture program specialist at the National Wildlife Federation. “Widespread use of dicamba throughout the growing season is harming other crops as well as wild and native plants, degrading food sources for wildlife and pollinators. This is a crossroads in being able to limit the destructive effects of dicamba. The EPA must deny permission for the continued use of this damaging herbicide across millions of acres.”
Dicamba is a highly volatile herbicide in use across the country. Despite strong evidence of herbicide damage, the EPA’s research is wholly inadequate regarding impacts to other plants, trees, pollinators and other wildlife.
“In Illinois we’ve seen firsthand the effect that herbicide drift has on public and private lands, wildlife habitat, and farms that grow sensitive crops.” said Kim Erndt-Pitcher, habitat and agriculture programs specialist at Prairie Rivers Network. “It is the invisible threat. You can tell it’s been there, but you can’t see it happen, and in many cases, you can’t tell where it came from. Meanwhile, the EPA seems more concerned with the needs of industry and manufacturers than those of farmers and the environment."
As part of the registration determination, the EPA is likely to be considering extending in-crop dicamba use to corn.
“Opening millions of additional acres of wild, ornamental, and crop plants to off-target dicamba injury would be very alarming,” said Emily May, pollinator conservation specialist with the Pesticide Program at The Xerces Society for Invertebrate Conservation. “We need to seek long-term solutions to reduce reliance on herbicides and build more ecologically and economically resilient farm landscapes.”
The report advocates for diversifying weed management strategies to improve resilience, including choosing crop varieties that are competitive with weeds, adjusting planting dates and depths of crops to help get ahead of weed growth, and managing nutrients in ways that give crops the competitive edge.
Mounting evidence suggests that current dicamba products and uses are causing unreasonable adverse effects on the environment, even when used exactly as specified on the labels. Based on what is known of the impacts of dicamba on off target species, the report issues the following recommendations for any future decisions on reregistering dicamba for agricultural use:
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