Follow the AWRI’s withholding periods
By Dave Antrobus, Solutions Development Lead @AntrobusDave
Production of grapes for wine destined for export requires a carefully planned spray program. When selecting crop protection products, growers need to ensure their application will not result in a residue that’s unacceptable to Australia’s major wine markets.
With the size of vineyards generally increasing, the grapevine growth stage can be variable across vineyards and indeed, can even vary significantly within blocks. So, when assessing grapevine phenology for the purpose of applying agrochemicals, growers should base their spray timing assessment on the most advanced vines in the block. This will minimise the possibility of residues at harvest.
Countries Australia export’s wine to often have different, lower, or no maximum residue limits (MRL’s) for the chemicals we are allowed to use in Australia. Unplanned or accidental use of the wrong product could have costly consequences.
The best place to secure the latest information on MRL’s is the Australian Wine Research Institute (AWRI). They are doing a great job of keeping us all updated!
The AWRI publishes Agrochemicals Registered For Use in Australian Viticulture (commonly known as the ‘Dog Book’). The Dog Book lists the active constituents registered for use and includes tables of recommended products for each active ingredient. The Dog Book also contains the latest AVCARE resistance management strategies.
Members of the Australian wine industry who would like to receive a copy of the latest Dog Book’ can contact the AWRI on 08 8313 6600 or email AWRI Helpdesk.
A pdf version of the Agrochemical Booklet 2017-2018 is also available for download.
With this wide array of information at your fingertips, there’s really no excuse for getting it wrong this season.