Thymol

thymolbehandlung_20170128

In the 1990s, the Bee Research Centre took part in a screening programme testing the potential effectiveness of over 100 essential oils and essential oil components against the varroa mite. Although sage, hyssop and thyme oils proved interesting, only thymol has been used in acaricide products. Thymol treatments require little effort, and there are a variety of preparations on the market. The advantages and drawbacks of thymol use are listed in the articles "Apilife VAR: A new varroacide with thymol as the main ingredient" and "THYMOVAR for Varroa control".

Use of essential oils for the control of Varroa jacobsoni (Oud.) in honey bee colonies (PDF, 1 MB, 20.01.2017)
A. Imdorf, S. Bogdanov, R. Ibáñez Ochoa, N. W. Calderone (1999)

Publication List

Publication List

Publications Joshua Witsoe

Keller M., Witsoe J.
Abschwemmung - Was eingespart wird, wird auch nicht abgeschwemmt.
Gmüesblatt, 3, 2024, 3.

Witsoe J., Total R., Haberey P., Heitkämper K., Bravin E., Möri H., Steffen P., Wyssa T., Anken T., Matter R., Keller M.
Nachhaltiger Pflanzenschutz im Gemüsebau durch Spotspraying-Technik (2021-2023).
Agroscope Science, 186, 2024.

Keller M., Haberey P., Witsoe J., Hodel D., Total R.
Auf den Punkt genau.
Gemüse (D), 12, 2023, 15-17.

Schweizer S., Schwizer T., Witsoe J.
Sortenbewertung Kirschen und Zwetschgen.
Agroscope Transfer, 442, 2022.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Azura (Blue Frost®).
Agroscope, Wädenswil. 10. Mai, 2022, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt PiSue 161 (Aria®).
Agroscope, Wädenswil. 19. April, 2022, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Joganta®.
Agroscope, Wädenswil. 10. Mai, 2022, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Jofela®.
Agroscope, Wädenswil. 10. Mai, 2022, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt PA3UNIBO (Sweet Gabriel®).
Agroscope, Wädenswil. 26. April, 2022, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Poisdel.
Agroscope, Wädenswil. 10. Mai, 2022, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Burlat.
Agroscope, Wädeswil. 19. April, 2022, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Bedel (Bellise®).
Agroscope, Wädenswil. 25. März, 2022, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Tegera.
Agroscope, Wädenswil. 13. Januar, 2021, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt PC 71468 (Benton®).
Agroscope, Wädenswil. 13. Januar, 2021, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Cacaks Schöne.
Agroscope, Wädenswil. 13. Januar, 2021, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Cacaks Fruchtbare.
Agroscope, Wädenswil. 13. janvier, 2021, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Christiana.
Agroscope, Wädenswil. 13. janvier, 2021, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Dabrovice.
Agroscope, Wädenswil. 13. janvier, 2021, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Tophit Plus.
Agroscope, Wädenswil. 13. Januar, 2021, 1 p.
other Languages: french

Schweizer S., Schwizer T., Witsoe J.
Sortenblatt Haroma.
Agroscope, Wädenswil. 13. Januar, 2021, 1 p.
other Languages: french

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Apilife VAR: A new varroacide with thymol as the main ingredient (PDF, 103 kB, 20.01.2017)
A. Imdorf, S. Bogdanov, V. Kilchenmann, C. Maquelin (1994)

"THYMOVAR" for Varroa control (PDF, 75 kB, 27.01.2017)
F. Bollhalder (1998)


Although the use of thymol leads to residues in the wax and honey, these are negligible from a toxicological viewpoint. Since about 2008 the use of thymol-based products has been declining in Switzerland, and beekeepers making use of these products have tended to experience greater winter losses than those using e.g. formic acid.

Thymol residues in wax and honey after Apilife VAR treatment (PDF, 757 kB, 14.09.2016)
S. Bogdanov, A. Imdorf, V. Kilchenmann (1998) 

https://www.agroscope.admin.ch/content/agroscope/en/home/themen/nutztiere/bienen/bienenkrankheiten/varroa/varroa-bekaempfung/thymol.exturl.html/aHR0cHM6Ly9pcmEuYWdyb3Njb3BlLmNoL2VuLVVTL1BhZ2UvUH/VibGlrYXRpb25zbGlzdGUvSW5kZXhNaXRhcmJlaXRlcj9hZ3Jv/c2NvcGVJZD0yMTMyNSZpc0RhdGVuUHVibGlrYXRpb25zbGlzdG/U9RmFsc2U=.html