- Products are restricted use, which means only certified applicators can apply them, and they must have dicamba-specific training.
- Farmers must maintain records regarding use of dicamba products.
- Dicamba can only be applied when wind speed is below 10 mph.
- Reduction in time of day dicamba might be applied (specifics not stated).
- Clean-out language has been added to prevent cross contamination.
- Awareness of risk to nearby sensitive crops has been heightened by enhancing susceptible crop language and record keeping.
State-Specific Restrictions on DicambaArkansas
The Administrative Rules and Regulations Subcommittee of the Arkansas Legislative Council approved a proposed rule from the Arkansas State Plant Board that bans applicators from using dicamba herbicide between April 16 and Oct. 31. The regulations include exemptions for dicamba use in pastures, rangeland, turf, ornamental, direct injection for forestry and home use. In addition to banning dicamba products for use in row crops, the state is increasing fines for violations to $25,000. These decisions come after nearly 1,000 official complaints in the state. At press time, the rule will again be considered by the full Arkansas Legislative Council. Illinois
While Illinois did not add any additional restrictions to EPA’s requirements, it is focusing more on education. Mandatory classes started in November and will continue through March to ensure all applicators can attend. The training is for use of Engenia, FeXapan and XtendiMax; all other dicamba formulations are illegal in soybeans. The classes review application methods and provide details about what label changes mean for applicators. “It is important that everyone in the stewardship chain understand the proper use of these products and effective weed management principles,” according to the Illinois Fertilizer and Chemical Association. Indiana On Aug. 30, 2017, the Indiana Pesticide Review Board voted to place all dicamba products used for agricultural purposes under restricted use. This decision means only certified applicators will be authorized to apply the product. The proposed rule would restrict “any dicamba containing pesticide product that (A) contains a dicamba active ingredient concentration greater than or equal to 6.5% and (B) is intended for agricultural production uses but does not also contain 2,4-D as an active ingredient; or is not labeled solely for use on turf or other non-agricultural use sites.” Iowa Iowa officials issued a Special Local Need label for XtendiMax, which requires expanded dicamba application training that includes:
- New use pattern for dicamba-tolerant soybeans.
- Application requirements including wind speed and direction and buffers.
- Information about temperature inversions.
- Detailed record keeping.
- Required spray tank clean-out.
- Information about off-target movement.
- June 30 or first bloom (whichever comes first) application cutoff.
- No application if actual or forecast temperature is more than 85°F.
- Only apply one hour after sunrise to one hour before sunset.
- Drive 12 mph or less.
- Applicators must notify the Department of Agriculture and include contact info, certification, date, time and location of application.
- 15 gal. per acre.
- No applications with 80° or less nozzles.