13 Reminders To Reduce Spray Drift

The Illinois Fertilizer and Chemical Association has published a one-page document to help retailers and all spray applicators reduce drift this season.
The Illinois Fertilizer and Chemical Association has published a one-page document to help retailers and all spray applicators reduce drift this season.
(Margy Eckelkamp)

The Illinois Fertilizer and Chemical Association has published a one-page document to help retailers and all spray applicators reduce drift this season. 

“IFCA understands the pressure our industry faces this spring when planters start rolling and weather conditions are not ideal. With this is mind, it is important that we still remain focused on implementing good stewardship practices while preventing legislative proposals and additional regulations. The public is watching us very closely,” the organization said in its publication. 

The 13 tips are recommendations to accomplish effective spray applications and use the best management practices. 

“Spray drift accounts for most of all misuse pesticide cases investigated by the Illinois Department of Agriculture. Drift can never be eliminated; however, it can be minimized if pesticides are applied under favorable weather conditions and by adopting proven drift reduction strategies,” says IFCA. 

Here are the 13 drift reduction strategies: 

  • Always read and follow label directions.  
  • Use nozzles that produce coarser droplets when applying pesticides on targets that do not require small, uniformly sized droplets.
  • When feasible, increase application volume (gpa) and use nozzles with larger orifices.
  • Switch to "low-drift" nozzles when buying new ones.
  • Have more than one size and type of nozzle on the boom ready to switch when the need arises.
  • Consider using air-assisted or electrostatic sprayers, which were developed for drift reduction.
  • Use nozzles with a wider spray angle so you can keep the boom closer to the spray target.
  • Make sure pressure gauges are accurate and keep spray pressure down.
  • Avoid spraying on extremely hot, low humidity, or windy days, especially if sensitive areas are nearby.
  • Spray during moderately unstable atmospheric conditions (very slight vertical updraft). Avoid spraying in stable atmospheric conditions or when inversions trap upward movement of very small spray droplets and result in drift fallout. Spraying during early morning, late afternoons, or night often avoids high winds and may be suitable, although these times have greater propensity for stable atmospheric conditions.
  • Because wind speed is a major factor in drift, avoid spraying near sensitive crops that are downwind.
  • Leave a buffer strip of effective width and spray the strip later when the wind shifts or dies down. New label requirements may use a drift model to determine the required buffer width. By exercising various drift-reduction techniques, this buffer zone may be kept to a minimum.
  • Use a reliable wind speed meter to accurately determine wind speed and make spraying decisions accordingly.

You can click here to view the one-page/printable best management practice document from IFCA.
 

 

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