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Herbicides

How to effectively use herbicides for Minnesota crop production

Applying herbicides

Off-target dicamba movement

In 2017, low-volatility formulations of dicamba were released for use with dicamba-tolerant soybean. Non-tolerant soybeans are extremely sensitive to this chemical. Despite the new formulations, dicamba injury to non-target soybeans was widely reported in Minnesota and several other states.

Spray drift

  • How to avoid pesticide drift — Strategies for nozzle selection, buffer zones, and wind speeds. Legal implications. How to report issues.
  • Herbicide spray drift demonstration (6:59; 2014) — This video shows the off-target movement of glyphosate in oat plots using six nozzle types with droplet sizes ranging from fine to ultra-coarse.  
  • Why temperature inversions are important (3:07; 2017) — This video addresses what temperature inversions are, when they occur, how to know if they’re occurring, and why they’re important when deciding if it’s the right time to spray. Look at current and predicted wind speed and rainfall conditions when deciding to spray.
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