In case you have not heard, there have been numerous problems in certain states, such as Missouri and Arkansas, with off-label applications of dicamba on dicamba-resistant crops. In Arkansas, things have gotten so out of hand that the Arkansas State Plant Board is proposing numerous restrictions on the use of dicamba in their state. Some of these potential restrictions include the following:
1) Banning the use of dimethylamine (DMA) salt and acid formulations (i.e. Banvel), except on pastures/rangeland but only if all susceptible crops are at least 1 mile away in all directions.
2) Prohibiting the application of dicamba diglycolamine (DGA) salt and sodium salt formulations (i.e. Clarity) from April 15 through September 15 (except on pastures/rangeland with the 1 mile susceptible crop buffer).
3) When BASF's Engenia formulation (dicamba-BAPMA) is used, a 1/4 mile downward buffer zone and 100' buffer zone in all other directions will be required. Engenia is less volatile than Banvel or Clarity.
4) New certification training will be required for both the Enlist (2,4-D) and Xtend (dicamba) technologies. As you already know, we (UGA Extension) have been doing this type of training for 2 years.
These restrictions are not final with a 30 day comment period and public hearing scheduled for November 21. Ultimately, the Governor and state legislature in Arkansas will have the final say.
As far as I know, Georgia growers have done a good job of not abusing dicamba this year and there has been no talk of restrictions such as those listed above in our state. However, what's going on in Arkansas should serve as a reminder to any Georgia grower or chemical dealer of the potential consequences of off-label uses or violations. Since Georgia is a large producer of potentially sensitive speciality crops, it will be important for all of us involved in this situation to do the right things and use common sense!!!
Weed Science Information (Row Crops/Vegetables) for County Extension Agents
