Grape Leaf Roll Virus

Grape Leafroll Virus(GLRV) can silently impact vine health, reduce yield, and compromise fruit quality. At Hill Labs, we provide accurate and timely testing to help growers detect GLRV early. Our advanced testing supports proactive vineyard management, enabling you to make informed decisions that protect your vines, preserve productivity, and maintain the integrity of your crop.  We also offer GLRV testing for nurseries, helping ensure that young vines are virus-free before planting. 

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.

Speak to the team to learn moreDownload the Analysis Request Form

What our customers have to say

"We've always found them to be responsive in getting results back and giving advice on problems we might be facing."

Andrew Hutchinson, Technical Manager, Turners & Growers

"We strongly recommend Hill Labs as a sound testing service provider to the honey industry."

Nick Walker, Technical Manager, Egmont Honey

"Their sample registration system has made things simple and seamless - collect, scan and send!"

Mathew Bannister, Compliance Manager, First Fresh New Zealand

Accreditations

As a New Zealand accredited laboratory by International Accreditation New Zealand (IANZ), Hill Labs' commitment to quality is tantamount to our overall operating philosophy. We pride ourselves on the quality of our work.