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Factsheets & other resources
Botrytis bunch rot, or ‘botrytis’, is a weather-driven disease that can cause significant loss of grape yield and quality, even after application of a full program of fungicides. This factsheet describes how botrytis develops, critical control points and integrated measures needed for high risk situations.
Powerpoint presentation – integrating site-specific measures at critical control points.
Powerpoint presentation – Botrytis debrief discussing what worked, expectations about chemical control, discriminate risk factors we can control over those we have little control over and what next?
This fact sheet provides information about managing botrytis bunch rot between pre-veraison and harvest.
In most parts of south-eastern Australia, season 2010–11 was the wettest since 1973–74 and 1974–75, surpassing the difficult seasons of 1992–93 and 1983–84.
The wet conditions brought three waves of assault on vineyards by diseases: first downy mildew, then powdery and finally the bunch rots. Let’s look at these three, ask what, if anything, can be done about them now and briefly look forward in readiness for the best controls in 2011–12.
Botrytis rot, caused by Botrytis cinerea, is one of a number of different fungi that can cause bunch rots on grapevines. The following information only relates to ‘in season’ management and does not cover other factors that affect botrytis risk such as site selection, variety and rootstock selection, row orientation, spacing and trellis type.