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.
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.
- The observance of mandatory no-spray buffer zones.
- Increased requirements for detailed record keeping.
- Interactive Q&A session with an expert panel.
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
- Surface temperature inversions - Succinct explanation of surface temperature inversion and how it could affect spray application
- Weather essentials for pesticide application - How to identify if an surface temperature inversion is likely to occur
- Weather monitoring for spraying operations - See GrowNotes Spray Application, Module 10: How to assess if conditions and equipment are suitable for spray operations
- Weather monitoring equipment for spray operations - Important legal, data collection and weather monitoring equipment tips for spray operations
- Summer fallow spraying - Implications for nozzle selection and spray quality from recent trial results
- Nozzle Selection Guide 2017 - The Nozzle Selection Guide includes L/ha at various Speeds (km/h) based on a 50cm nozzle spacing.
Application and Equipment
- Managing variation in Spraying Speed
- Weed control in wheel tracks
- Spray height control
- Practical tips for spraying
- Spray water quality
- In-Crop herbicide use
- Pre-season sprayer checks
- Foliar applications of spray
- Maintaining Efficacy With Larger Droplets - New 2,4-D Application Requirements
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)
- Consists of:
- 23 modules
- 77 “How to videos” which can be accessed from the Introduction/Contents module as well as from within the relevant Module section of the GrowNotes
- A Water flush for residuals Calculator (XLSX 14kb)
- Go to the Spray Application Manual for more modules and more information
State and Territory Specific Resources
- New South Wales - Refer to various documents on the EPA Pesticides web page and watch the safe use of pesticides video
- Northern Territory - Refer to various documents on the Chemical services web page
- Queensland - Guidelines for safe use of agricultural and veterinary chemicals web page
- South Australia - Biosecurity SA: rural chemicals web page
- Tasmania - Codes of practice, minimum standards, guidelines and information sheets for safe use, storage and disposal of chemicals
- Victoria - A guide to using agricultural chemicals in Victoria web page and watch the chemical use videos
- Western Australia - A guide to the use of pesticides in Western Australia
Reporting a Spray Drift Incident in your State or Territory
- New South Wales - Refer to the How to respond to pesticide misuse web page and call the environment line on 131 555, or email firstname.lastname@example.org
- Northern Territory - Refer to the NT WorkSafe Chemical Spray Drift bulletin or call the pollution response line on 1800 064 567
- Queensland - Refer to the Reporting chemical spray drift web page
- South Australia - Refer to the Chemical misuse (including spray drift) web page and call the biosecurity SA agricultural and veterinary chemicals hotline on 1300 799 684 or email PIRSA.RuralChemicals@sa.gov.au
- Tasmania - Refer to the Spray Information and Incidents web page and call the spray information and referral unit on 1800 005 244 or 03 6777 2184
- Victoria - Refer to the Reporting spray drift of agricultural chemicals web page
- Western Australia - Refer to various documents on the Guides on pesticide use for industry and local government
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
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