Ten tips to reduce spray drift

The Land

Type: Article
Knowledge level: Intermediate

The Land spoke to spray application expert Bill Gordon. A summary of his 10 tips are:

  1. Choose products carefully, this includes the choice of active ingredient, the formulation type and the adjuvant used.
  2. Understand the products mode of action and coverage requirements on the target.
  3. Select the coarsest spray quality that will provide an acceptable level of control.
  4. Always expect surface temperature inversions will form later in the day, as sunset approaches, and they are likely to persist overnight and beyond sunrise on many occasions.
  5. Use weather forecasting information to plan the application.
  6. Only start spraying after the sun has risen more than 20 degrees above the horizon and the wind speed has been above 4 to 5 km/h for more than 20 to 30 minutes, with a clear direction that is away from adjacent sensitive areas.
  7. Set the boom height to achieve double overlap of the spray patterns.
  8. Avoid high spraying speeds, particularly when ground cover is minimal.
  9. Be prepared to leave unsprayed buffers when the label requires, or when the wind direction is towards sensitive areas.
  10. Continually monitor the weather conditions at the site of application.
2018 - Australia - The Land
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