Being aware of your local weather conditions is critical before and during the application of any dicamba product, according to Robert Wolf, On Target Application Academy (OTAA) trainer for BASF and professor emeritus at Kansas State University.

“Wind is the No. 1 concern the industry has for off-target movement,” he says.

Portable wind speed indicators are the best tool for determining wind speed, Wolf notes. He recommends measuring it often, based on the size of the job, and checking wind direction. He says it’s best to use the wind speed indicator at boom height, so you’re measuring wind speed at the product release height from the nozzles. Placing small colored flags in the field can help you to determine wind direction.

For added safety, Wolf says, “I also recommend using a compass, so applicators can properly record the degrees on it; that indicates the direction the wind is coming from, so applicators can be well-protected in their recordkeeping process.”

Buffers between dicamba-sprayed fields and surrounding crops are also an important consideration, says Alan York, North Carolina State University Extension weed specialist emeritus.  His specific concern: “The labels do not mention a ‘safe’ distance between application site and sensitive crops.”

Wolf encourages applicators to consult sensitive crop registries for their areas prior to spraying.