Hans Theodor Güssow

Hans Theodor Güssow (1879-1961) was a Canadian plant pathologist. Güssow was born in Breslau, Germany (today known as Wrocław, part of Poland) and educated at universities in Breslau, Liepzig and Berlin. In 1903 he moved to the UK to work as an assistant to William Carruthers who was the botanist for the Royal Agricultural Society.[1] He later emigrated to Canada after being appointed Dominion botanist by Sydney Arthur Fisher.[2] World War I had a "devastating effect" on Güssow's life. In a meeting between farmers and others he was referred to as "that German in Ottawa" and fellow plant pathologists petitioned the Minister of Agriculture to appoint a new Dominion botanist who could "command their confidence".[3]: 55  He went on to become the first president of the Canadian Phytopathological Society in 1929.[4] He was an advocate of the need to establish biosecurity regulations to prevent the spread of plant pests and diseases. He addressed international congresses in the Netherlands and New York in 1923 and 1926 respectively, which led to the International Plant Protection Conference held in Rome in 1929 at which 26 countries signed a new International Convention for the Protection of Plants.[3]: 173 [5]

Hans Theodor Güssow
A black and white photograph of Güssow (date unknown)
Portrait photograph of Güssow (date unknown)
Born1879
Breslau
Died1961
Vancouver
NationalityGerman/Canadian
OccupationPlant pathologist

References
  1. Ainsworth, Geoffrey Clough; Webster, John; Moore, David (1996). Brief Biographies of British Mycologists. British Mycological Society. pp. 78–79. ISBN 978-0-9527704-0-4.
  2. Castonguay, Stéphane (1 March 2004). "Naturalizing Federalism: Insect Outbreaks and the Centralization of Entomological Research in Canada, 1884-1914". Canadian Historical Review. 85 (1): 1–34. doi:10.3138/CHR.85.1.1.
  3. Estey, Ralph Howard (1994). Essays on the Early History of Plant Pathology and Mycology in Canada. McGill-Queen's Press - MQUP. pp. 173–174. ISBN 978-0-7735-1135-4.
  4. Johnson, Thorvaldur (2 July 2020). "The Dominion Rust Research Laboratory, 1925-1957". Canadian Journal of Plant Pathology. 42 (3): 468–518. doi:10.1080/07060661.2019.1622594.
  5. Castonguay, Stéphane (1 January 2010). "Creating an Agricultural World Order: Regional Plant Protection Problems and International Phytopathology, 1878-1939". Agricultural History. 84 (1): 46–73. doi:10.3098/ah.2010.84.1.46.
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