New active constituent for botrytis bunch rot
The Australian Pesticides and Veterinary Medicines Authority (APVMA) has approved the active constituent Aureobasidium pullulans for use on wine-grapes. Aureobasidium pullulans (strains DSM 14940 and DSM 14941) is a biological fungicide, sold as ‘Botector’. Botector is registered for control of botrytis bunch rot (Botrytis cinerea) in grapevines and is distributed by Nufarm Australia Limited.
The Botector label recommends up to four applications per season between 80% capfall (E-L 25) and berries not quite ripe (E-L 37). A withholding period (WHP) for Botector is not required when it is used as directed.
Recommended restriction on use for grapes destined for export wine: May be used until harvest.
New recommendation for products containing dimethomorph for export wine production
Products containing dimethomorph (Acrobat, Downright, Sphinx and Zampro) can be applied up to growth stage E-L 31, that is berries pea size (not greater than 7 mm) provided that only one application is made per season. If more than one application of a product containing dimethomorph is applied to the crop, an E-L 25 (80% capfall) restriction must be observed to avoid a detectable residue in wine.
The latest version of the ‘Dog book’ can be viewed in the online pdf or mobile app available from the agrochemicals page on the AWRI website. 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 of agrochemical information, and should not be interpreted as an endorsement of any product.