Change to resistance management strategies
Croplife Australia has recently issued an update to its fungicide resistance management strategies. The AWRI has updated the online version of the ‘Dog book’ to reflect these changes for Botrytis, downy mildew and powdery mildew.
Please ensure you refer to the updated information on pages 23 to 26 when planning your spray strategy.
New active constituent for downy mildew
The Australian Pesticides and Veterinary Medicines Authority (APVMA) has approved the use of the following active constituent combination in wine-grape production.
AMISULBROM + TRIBASIC COPPER SULFATE
Amicus Blue is registered for control of downy mildew. Amicus Blue is a Nufarm Australia Limited product which is a co-formulation of amilsulbrom and tribasic copper sulfate. The label withholding period (WHP) is 28 days before harvest.
Recommended restriction on use for grapes destined for export wine: Use no later than E-L 31, berries pea size (7 mm diameter).
Resistance management strategy for Amicus Blue: Do not apply more than two consecutive applications and do not apply more than four applications per season. If consecutive applications are made they should be 7 to 10 days apart and followed by two applications with an alternative mode of action before resuming Amicus Blue applications.
Re-entry statement for Amicus Blue: Do not enter treated areas until the spray has dried unless wearing cotton overalls buttoned to the neck and wrist (or equivalent clothing) and chemical resistant gloves. Clothing must be laundered after each day’s use.
Do not enter treated areas in vineyards for five days to perform very high exposure activities such as tying/training/leaf pulling unless wearing cotton overalls buttoned to the neck and wrist (or equivalent clothing) and chemical resistant gloves. Clothing must be laundered after each day’s use.
For more information, please contact Marcel Essling on 08 8313 6600 or email email@example.com.
This information is provided to inform the Australian grape and wine sector and should not be interpreted as an endorsement of any product.