What are Grapevine Leafroll-Associated Viruses (GLRaV-1, 2, and 3)?
These viruses are harmful pathogens that spread quickly in vineyards, mainly through insect vectors like mealy bugs. They reduce fruit quality and vine performance, especially in red wine grape varieties, and shorten the commercial lifespan of infected vines. Infected vines might not show symptoms for up to a year, making early detection essential.
What’s the best way to detect grapevine leafroll viruses early?
Hill Labs offers testing for GLRaV-1, 2, and 3 using the ELISA method (Enzyme Linked Immuno-Sorbent Assay). This technique detects viral infections in grapevines before symptoms become severe, helping growers take early action to manage and contain the spread. Early detection is key to protecting vine health and maintaining crop quality.
Download Procedure For Collecting Cane Samples for GLRaV-2 and 3 Testing Technical Note
Download Procedure For Collecting Leaf Samples for GLRaV-2 and 3 Testing Technical Note
What is the turnaround time for Grape Leaf Roll Virus testing?
Results for routine testing are available the in 10 working days and 3 days for urgent testing from receipt of the sample.
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