Bradley, 2017b
Kevin Bradley, August 14, 2017, “Update on Dicamba-related Injury Investigations and Estimates of Injured Soybean Acreage,” Integrated Pest and Crop Management Newsletter, University of Missouri.
SUMMARY:
Updates numbers of dicamba damage nationally- 2,242 complaints and estimated 3.1 million acres damaged. FULL TEXT
Hightower, 2017
Mary Hightower, “Dicamba Drift: Arkansas Researchers Find All Formulations Volatile; 876 Injury Reports,” AgFax, August 10, 2017.
SUMMARY:
The Plant Board reports 876 complaints as of 8/10. An estimated 35% of the state’s 3.5 million acres and 300,000 of the 400,000 acres of cotton are planted in dicamba resistant acreage that would be sprayed with the new herbicide formulations. Weed scientists with the state point out that although lab testing found that the new formulations (Engenia, Xtendimax, and FeXapanTM) were less volatile than older dicamba herbicides (i.e. Banvel and Clarity), researchers have found that under realistic, field growing conditions “differences in volatility between older dicamba products such as Clarity and newer ones including Engenia and Xtendimax are not as evident… Soybeans are so sensitive, very, very low levels of volatility can cause injury.” FULL TEXT
Abbott, 2017
Chuck Abbott, “Arkansas Task Force Aims for Long-Term Recommendations on Use of Dicamba,” The Fern, August 9, 2017.
SUMMARY:
Arkansas has appointed a 21-member task force to help identify solutions for the dicamba drift damage problem, with 900 complaints received this year so far. FULL TEXT
EPA, 1999a
Environmental Protection Agency, “Dicamba (3,6-dichloro-o-anisic acid); Pesticide Tolerance,” 40 CFR Part 180, Federal Register, January 6, 1999, Vol. 64, No. 3.
SUMMARY:
Updates tolerances for dicamba. FULL TEXT
DuPont, 2015
DuPont, FeXapan Herbicide Label, July 23, 2015, EPA Registration Number 352-913.
SUMMARY:
First label for BASF FeXapan Herbicide containing DGA dicamba and inert ingredients intended to reduce volatility and drift. FULL TEXT
Gray, 2017b
Bryce Gray, “Reports of crop damage resurfacing since Missouri dicamba ban lifted,” St Louis Post-Dispatch, August 4, 2017.
SUMMARY:
Reports that the dicamba ban in Missouri was lifted in Mid-July and farmers had resumed spraying. Damage reports are re-occurring. One farmer quoted in the story compares his Missouri acres where “every acre” is showing damage to his healthy soybean fields in neighboring Arkansas that has a similar dicamba ban in place. Some places showing damage are at least a mile away from any possible source of dicamba. Missouri’s ban was in place for less than a week after stricter conditions rules for spraying dicamba were issued targeting wind speed and the time of application. Monsanto is based in Missouri and some questioned the role their political power played in the lifting of the ban. FULL TEXT
Parker, 2017
Mario Parker, “Pesticide ‘Drifting’ Wreaks Havoc Across U.S. Crops,” Bloomberg, August 1, 2017.
SUMMARY:
Bloomberg reports on the dicamba damage numbers. Article includes key information from Monsanto about number of acres planted in dicamba-resistant soybeans (20 million) and cotton (5 million) in 2017. This represents about 25% percent of the national soybean crop and about half of the cotton crop, very significant numbers. FULL TEXT
Bradley, 2017a
Kevin Bradley, July 25, 2017, “Ag Industry, Do we have a problem yet?,” Integrated Pest and Crop Management, University of Missouri.
SUMMARY:
Article summarizes the total number of dicamba-related drift complaints as 1,411 as of July 19, 2017. Arkansas leads with 686 complaints, while Missouri has over 200. Estimates of acres damaged are up to 2.5 million. The author asks: “does 1,411 official dicamba-related injury investigations and/or approximately 2.5 million acres of dicamba-injured soybean constitute a problem for U.S. agriculture? …[M]y answer is an emphatic yes.” FULL TEXT
EPA, 1999b
Environmental Protection Agency, “Permanent Group 1 Tolerances By Pesticide,” August 3, 1999.
SUMMARY:
Sets tolerances for pesticides after the passage of the FQPA. FULL TEXT
EPA, 1999c
Environmental Protection Agency, “Reassessed Group 2 Tolerances by Pesticide,” August 4, 1999.
SUMMARY:
Reassessed tolerances for pesticides following the passage of the FQPA. FULL TEXT