Spray Drift

APVMA Releases Changes to 2,4-D Chemical Use

The APVMA is implementing new instructions to mitigate the risk of spray drift, which restrict the application of 2,4-D herbicides. In order for these new instructions to be in place, all current 2,4-D labels will be cancelled and the use of 2,4-D will be through a permit. The permit will stay in place until the conclusion of the current 2,4-D review.

What you need to know

  • The full instructions can be found here https://apvma.gov.au/node/32941
  • Do not spray when a surface temperature inversion is present
  • Applicators must now use at least a Very Coarse (VC) spray quality
  • When using a boom sprayer, boom heights must be 0.5m or lower above the target canopy
  • Downwind buffers now apply (typically less than 50m, subject to rate and product being applied) between application sites, downwind sensitive crops and environmentally sensitive aquatic areas
  • Additional record keeping is required. Operators need to update spray records, with greater detail, within 24 hours of application and keep these records for a minimum of two years.
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  • Spray drift webinar

    • 2-3pm Australian Eastern Standard Time (AEST)
    • 1.30-2.30pm ACST (SA)
    • 12-1pm AWST (WA)

The webinar will cover

The webinar will include a presentation by APVMA about the changes and feature a panel of experts to provide practical advice and personal experience to answer your questions.

  • APVMA explanation of changes to the ‘directions for use’ for 2,4-D.
  • Changes to application techniques.
  • Spray quality.
  • Timing.
  • The observance of mandatory no-spray buffer zones.
  • Increased requirements for detailed record keeping.
  • Interactive Q&A session with an expert panel.

APVMA Instructions

Mitigating Spray Drift Risk

Weather and Drift Reduction

The resources below will help you quickly identify information that is relevant to you for mitigating the risk of spray drift

Nozzle Selection

Application and Equipment

Tips and Tactics

Spray Application Manual for Grain Growers (released February 2017)

Bill Gordon was the editor but there are a number of other contributing authors and presenters (David Gooden, Andrew Storrie, Craig Day, Graeme Betts, Jorg Kittt, Tom Wolfe, Tim Neale)

State and Territory Specific Resources

Reporting a Spray Drift Incident in your State or Territory

Spray Application Workshops

Australia’s leading spray application specialist Bill Gordon will lead the free-of-charge workshops at St Arnaud, Pyramid Hill, Manangatang and Robinvale where growers will learn how to enhance the performance of their sprayer, improve product application and mitigate spray drift risk factors.

Presented by Birchip Cropping Group (BCG), the workshops will cover topics such as nozzle selection; droplet size and spray quality; legal and nozzle requirements for 2,4-D; appropriate conditions for spraying; day versus night spraying (risk of drift); and 24-hour risk profile for summer spraying.

Other topics include rate of product and adjuvant selection; adjuvant effects on nozzles; boom height above the target; influence of travel speed; boom stability importance; machine/sprayer design; and capture surface/ground cover.

The workshops will be at:

  • St Arnaud Sporting Club – October 16, 3.00-6.30pm
  • Pyramid Hill Football Club – October 17, 9.00am-12.30pm
  • Manangatang Golf Club – October 18, 9.00am-12.30pm
  • Robinvale Golf Club – October 19, 8.30am-12.00pm.

Registration for the workshops, which include catering, is essential. For further details and to register, phone BCG on 03 5492 2787 or visit https://www.bcg.org.au/events/.


Australian Pesticides and Veterinary Medicines Authority
Phone: +61 2 6210 4701
Email: enquiries@apvma.gov.au