NDSU Extension Pesticide Program Specialist Andrew Thostenson reminds applicators to be aware of temperature inversions when spraying, especially if applicators use dicamba. Thostenson says within one hour of sunset, farmers should be shutting down the spray operation regardless of wind speed or cloud cover. “What I worry about is applicators just get to the place where they end up pushing the boundaries of what they know is not necessarily a good idea, but they’re trying to get by.” North Dakota’s dicamba application deadline is June 30 or R1 growth phase (whichever comes first). Download NDAWN’s inversion app.
