Fungicide-Free.
Proven in the Field.
Ready for Your Vineyard.
Thorvald is the world’s only UV-C robot proven to deliver commercial disease control in vineyards. This season Thorvald is protecting around 2,500 acres in California, helping growers manage powdery mildew, raise yields, and cut chemical use.
Castoro Cellars transformed one of its organic Paso Robles vineyards, spanning 100 acres, by using Thorvald to perform UV-C light treatments on the vines.
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The impact
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UV-C treatment is so effective,
there have been zero sprays
for powdery mildew.
Bunch counts have enabled
much better crop forecasting.
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Plus many other benefits
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No residues, re-entry or pre-harvest intervals – treat up to harvest.
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No resistance, regulated products, or sulphur/potassium bicarb leaf damage.
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Reduced labour and complexity and also increases worker safety.
Trusted by leading growers
Thorvald delivers automated field solutions to industry leaders in grapevines.
One of our long-time clients told us the Chardonnay fruit is the cleanest they’ve ever seen, it’s been the consistent theme with comments from our vineyard team.
Buen limpio!
Gregory M. Gonzalez
Director of Agriculture
Bien Nacido Vineyards
Sept 2025
The Science Behind the Results
UV-C technology offers a residue free, safe, and fully autonomous solution for protecting grapevines. UV-C light damages fungal DNA and prevents diseases before they spread. It works best at night by blocking the fungi’s natural recovery mechanisms.
Unlike chemical sprays, this treatment is non chemical, non residual, and preventive, with no pre harvest interval or re entry restrictions. There is also no risk of fungicide resistance, making it a long term sustainable tool that is safe for organic production.
This is one of the most effective disease-control breakthroughs we’ve seen for high-value crops
David Gadoury, Cornell University
Zero Upfront, Positive ROI from Year One
Flexible financing and measurable impact for every grower.
Pay-per-acre
model
Only pay for what you use.
Zero CAPEX, no robot purchase required.
Sustainable
financing
Access green loans and programs that reward eco-friendly farming.
ESG certification credits
Qualify for funding and recognition through ESG-driven initiatives.
Investor-
ready
Designed to attract
impact-driven investors who value sustainability.
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