An economic assessment of the impact on the Western Australian viticulture industry from the incursion of grapevine downy mildew
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Grapevine downy mildew (Plasmopara viticola) was first detected in commercial vineyards in the Swan Valley region of Western Australia (WA) in 1998 and has now spread to all grape-growing regions of the state. This paper uses a bioeconomic model linking weather, spread, infection development, variable production costs and revenue to estimate the costs of P. viticola over time. Results indicate mean annual costs of AUD $7.3 million per year, equivalent to a 1% drop in the gross value of WA grape-growing industries. Cumulative losses since the disease became established are estimated to be AUD $140 million.
KeywordsEconomic impact Grapes Grapevine downy mildew Plasmopara viticola
This study was supported through an Australian Government Research Training Program Scholarship and funding from Wine Australia. The authors would like to acknowledge the late Dr. Trevor Wicks whose guidance and council during this research was invaluable. The authors also thank two anonymous reviewers for their helpful comments and suggestions for the paper.
This study was funded by an Australian Government Research Training Program Scholarship and Wine Australia Grant Ph1301.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
The authors confirm that all ethical issues and implications in relation to this research paper have been considered. We confirm that ethical approval need not be sought.
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