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)

Hassan-Roland Nasser

Hassan-Roland Nasser

Picture


Dr. Ing.

Groupe de recherche

  • 22.00.20.04 Production numérique

Hassan-Roland Nasser

Agroscope
Rte de la Tioleyre 4
1725 Posieux
Suisse

tél. +41 58 48 39572

Site Posieux

Hassan-Roland Nasser

Informations supplémentaires

I work as a data scientist in the digital production group and I am part of the DataDrive team. I am involved in several project and I am managing the computer vision coordination project (a SFF11 subprojet).

Data science contains a broad spectrum of activities and it is a challenging field, not only because it comes at the interface of computer science and math, but also because:

  • There are a lot of available tools in the market.
  • Working in data science involves having some domain knowledge (often different than our domain knowledge of comfort)
  • The reproducibility and generalizability of created systems and models

 

My main function is to mitigate these difficulties in a research context by contributing to data and machine learning aspects in the projects I am contributing to. Here are few examples of the projects I am working on:

  • Computer vision coordination project: enable and foster computer vision based projects at agroscope by supporting CV based projects and organizing regular meetings and workshops about the topic.
  • Rumex detection using computer vision: in this project, I work on the modelling and the system architecture.
  • Smart irrigation using dendrometers signals over LoraWAN: in this project, I work on signal and data analysis and on implementing the backend routine for automation.
  • Rhythmicity as welfare indicators for ruminants: I develop algorithms (in the context of the DigiRhythm package) and analyze data.

 

Google Scholar: https://scholar.google.fr/citations?user=L97ZODwAAAAJ&hl=en

ORCID: https://orcid.org/0000-0003-1821-3234

Linkedin: https://www.linkedin.com/in/nasserha

DigiRhythm Libray: https://cran.r-project.org/web/packages/digiRhythm/index.html

Smart weed control: https://www.agroscope.admin.ch/agroscope/en/home/topics/economics-technology/smart-farming/smart-weed-control.html 

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/aHR0cHM6Ly9pcmEuYWdyb3Njb3BlLmNoL2ZyLUNIL1BhZ2UvTW/l0YXJiZWl0ZXI_YWdyb3Njb3BlSWQ9MjE1ODE=.html