All spray operators need to use wind speed and direction to minimise risk.

Predicted changes in wind direction allow the operator to plan which parts of the property should be sprayed at different times.

Where possible, also plan to treat the paddocks adjacent to boundaries and sensitive areas when the wind direction is away from those parts, particularly in areas where weeds are likely to begin to show signs of stress sooner than other areas (for example, lighter soils for moisture stress).

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Additional information on planning spray operations can be found in Module 5: Spray Plans.