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Stephan Häfliger

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Registered in the commercial register of the Canton of Fribourg.

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The content of this website has been prepared with great care. However, we accept no liability for the accuracy, completeness or timeliness of the information. Claims for damages arising from access to or use of this information are excluded to the extent permitted by law.

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Texts, images, videos and graphics on this website belong to Häfliger Technology AG or the rights holders named. Any use outside this website requires prior written consent.

Image credits:

• Video on the Vines page: Tom Schönmann, Pexels
• Powdery mildew on wine grapes: Olivier Lemoine (Photo-Terroir.fr), CC BY-SA 4.0, Wikimedia Commons
• Chasselas grapes in Satigny: Sdnegel, CC BY-SA 4.0, Wikimedia Commons
• Powdery mildew on a vine leaf: Rude, CC BY-SA 3.0, Wikimedia Commons
• Powdery mildew on strawberry: Dollymoon, CC BY-SA 3.0, Wikimedia Commons
• Strawberry plant: Shixart1985, CC BY 2.0, Wikimedia Commons
• Spider mites: CSIRO, CC BY 3.0, Wikimedia Commons
• Raspberries: Ivar Leidus, CC BY-SA 4.0, Wikimedia Commons
• Raspberries with grey mould: Schlaghecken Josef, CC BY 4.0, Wikimedia Commons
• Blackberries: Robert Taylor from Stirling, ON, Canada, CC BY 2.0, Wikimedia Commons
• Blackberry aphid: Sandy Rae, CC BY-SA 4.0, Wikimedia Commons
• Blueberries: Judy Gallagher, CC BY 2.0, Wikimedia Commons
• Blueberry aphid: Jerry A. Payne, USDA Agricultural Research Service, Bugwood.org, CC BY 3.0 US, Wikimedia Commons
• Black cherry aphid: S. Rae from Scotland, UK, CC BY 2.0, Wikimedia Commons
• Cherries: Gerda Arendt, CC0, Wikimedia Commons
• Apple powdery mildew: megachile, CC0, Wikimedia Commons
• Apple tree: Gerda Arendt, CC0, Wikimedia Commons
• Pear aphid: Slimguy, CC BY 4.0, Wikimedia Commons
• Pear tree: Yercaud-elango, CC BY-SA 4.0, Wikimedia Commons
• Aphids: Jules Verne Times Two, CC BY-SA 4.0, Wikimedia Commons
• Mealy cabbage aphid: Whitney Cranshaw, Colorado State University, Bugwood.org, CC BY 3.0, Wikimedia Commons
• Cabbage whitefly: Schlaghecken Josef, CC BY-SA 4.0, Wikimedia Commons
• Pointed cabbage: Simon Mannweiler, CC BY-SA 4.0, Wikimedia Commons
• Lettuce aphid: Schlaghecken Josef, CC BY-SA 4.0, Wikimedia Commons
• Lettuce: August Geyler, CC BY-SA 4.0, Wikimedia Commons
• Melon aphid: Clemson University - USDA Cooperative Extension Slide Series, United States, public domain, Wikimedia Commons
• Cucumber plant: Amnsalem, CC BY-SA 4.0, Wikimedia Commons
• Aphids on courgette: RoRo, CC0, Wikimedia Commons
• Courgette plant: net_efekt from Oxford, UK, CC BY 2.0, Wikimedia Commons
• Whitefly on a leaf: Wee Hong, CC BY-SA 4.0, Wikimedia Commons
• Tomato plant: Kolforn (Kolforn), CC BY-SA 4.0, Wikimedia Commons
• Whitefly: Dr. Guido Bohne, CC BY-SA 4.0, Wikimedia Commons
• Pepper with aphids: Schlaghecken Josef, CC BY 4.0, Wikimedia Commons
• Peppers: H. Zell, CC BY-SA 3.0, Wikimedia Commons
• Powdery mildew on chard: Schlaghecken Josef, CC BY-SA 4.0, Wikimedia Commons
• Black bean aphid: Natalka Ukraine (baby-bear.org), CC BY 4.0, Wikimedia Commons
• Beetroot: Timothy A. Gonsalves, CC BY-SA 4.0, Wikimedia Commons

Sources

The figures and statements in the infographics are based on the following sources:

• Agroscope, Merkblatt Nr. 265/2026: „Einsatz von UV-C zur Bekämpfung des Echten Mehltaus in Erdbeeren“
• Schweizer Obstverband: „UV-C in der Anwendung“, Praxisbericht Sunnehof Beeri (TG), 2024
• Koubek, C. T. & Aghaee, M. A. (2026): Evaluation of UV-C light for control of Tetranychus urticae and Eotetranychus lewisi on strawberry. Frontiers in Agronomy, doi:10.3389/fagro.2026.1805940
• Gadoury, D. M. et al., Cornell AgriTech: UV-C against grapevine powdery and downy mildew, BIO Web of Conferences, 2022

Information on the pests and diseases of each crop:

• Agroscope, Swiss Berry Note 15: „Die Heidelbeere: Schädlinge und Krankheiten“, 2016
• AGES (Österreichische Agentur für Gesundheit und Ernährungssicherheit): Schaderreger von A bis Z – Obstbaumspinnmilben, Weisse Fliege
• Bio Austria, Fachtag 2023: Pflanzenschutz bei der Birne
• Pacific Northwest Plant Disease Management Handbook: Pear – Powdery Mildew
• EPPO Global Database und Plantwise: Chaetosiphon fragaefolii, Trialeurodes vaporariorum, Panonychus ulmi
• Swezey, S. L. et al., University of California Santa Cruz: Tractor-mounted vacuums against Lygus in organic strawberries
• Gesunde Pflanzen (1983) 35, 235–237: Thrips tabaci in cabbage

Notes:

• The images of an infected and a healthy plant on the Strawberries page are example images. In Agroscope trials, UV-C applied three times a week was as effective as a fungicide treatment.
• No clear effect of UV-C has been shown for grey mould (botrytis) and thrips (Agroscope 2026).