June 11, 2021 | By Rupp Seeds
Pesticide spray drift can occur under air temperature inversion conditions. Air temperature inversions occur when cooler air forms closest to the surface trapped below a layer of warmer air. While temperature inversions may develop at any time of the day, they are most likely to form during late afternoon or early evening and may persist through the morning hours. Temperature inversions create the conditions for small spray droplets to drift to nontarget areas. Some pesticide labels restrict applications made during inversions. Learning how to recognize when a temperature inversion occurs can help applicators avoid potential spray drift.
Read more about inversion effects on spray droplets, spray timing, and how to identify an inversion in this issue of SeedScoop.