How do spray droplets travel 3 or more miles off-target when there’s no wind? Two words: temperature inversion. That’s why Andrew Thostenson, North Dakota State University Extension specialist, says herbicide applicators need to recognize the signs and stop spraying when temperature inversions are present or setting up.

 

Thostenson explains that applications during an inversion will take longer to hit the target, and the dense air will move droplets laterally. “Inversions don’t create spray drift, but they certainly exacerbate it,” he says.

 

Click Here to read more.