Supported by New Zealand Winegrowers and Bragato Research Institute, Drs Eline van Zijll de Jong and Mark Sosnowski, along with the Indevin team, have been researching best practices for managing grapevine trunk disease through remedial surgery. Over the past five years, comprehensive data has been gathered from commercial vineyard blocks on the progression of trunk disease in mature vines, the distribution of staining and associated pathogens throughout the trunk, as well as the impact on new trunk recovery and subsequent yields following remedial surgery. Monitoring of the health and productivity of reworked vines will continue over the next two years, comparing them with untreated vines within the block as well as other mature and replanted commercial blocks previously surveyed by the team. This data will serve as the foundation for an economic model aimed at quantifying the cost-effectiveness of remedial surgery and other trunk disease management strategies. The financial implications of delaying intervention will be explored, providing additional insights alongside the economic model to assist growers in making informed decisions on managing grapevine trunk disease.
Project summary
Research leads: Linnaeus, SARDI, Sutton McCarthy
Years: 2024-2026
Funding: Bragato Research Institute