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After Extensive Crop Damage, AR and MO Issue Temporary Ban on Sale and Use of Weedkiller Dicamba

(Beyond Pesticides, July 13, 2017) Over the past week, both Arkansas and Missouri issued bans on the sale and use of the weedkiller dicamba by farmers because of crop damage associated with the pesticide’s drift off treated fields. On Friday, July 7, the Arkansas Agriculture Department announced this emergency 120-day ban, which raised civil penalties for misuse of the toxic herbicide from $1,000 to a maximum of $25,000. The same day, the Missouri Department of Agriculture announced a temporary “Stop Sale, Use or Removal Order” on all dicamba products in the state labeled for agricultural use. Dicamba has been linked to damage of the kidney and liver, neurotoxicity, and developmental impacts. The chemical has a strong propensity to volatilize small particles of the herbicide into the air and drift far off-site. Sensitive crop species can be damaged by dicamba at levels in the parts per million.

As of July 7, nearly 600 complaints of dicamba danage have been filed by Arkansas farmers in 23 different counties. In Missouri, as of July 3, there are 123 cases of dicamba injury complaints under investigation and according to the Missouri Soybean Association, “more than 200,000 Missouri soybean acres currently show signs of suspected dicamba damage.”

According to Missouri Agriculture Director, Chris Chinn, the ban means that “distributors cannot sell dicamba products and, more importantly, it means that farmers should not apply dicamba products until we lift this order.”

The move is the latest in a series of crises that began when multinational chemical company Monsanto began selling soybeans genetically engineered (GE) to tolerate a new formulation of dicamba not currently available, leading to off-label uses of older dicamba products.This ongoing dicamba crisis is a direct result of a chemical-intensive food production system. The U.S. Department of Agriculture (USDA) deregulated Monsanto’s dicamba-tolerant Roundup Ready 2 Xtend soybeans and Bollgard II XtendFlexa® cotton in January 2015, but it was not until November 2016 that EPA registered the use of some dicamba formulations, Xtendimax  and VaporGrip  for use on these crops. Monsanto describes the dicamba-tolerant GE crops as “designed to provide farmers with more consistent, flexible control of weeds, especially tough-to-manage and glyphosate-resistant weeds to maximize crop yield potential.” What was viewed by industry and EPA several years ago as a unique occurrence, weed resistance is now acknowledged to be a serious economic problem for farmers. While the agrichemical industry and its researchers can no longer ignore weed resistance to pesticides, it continues to promote more chemical applications in GE crops as the solution, despite the success of organic systems.

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