Taco Hajo van den Honert (botanist)

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Taco van den Honert in Indonesia

Taco Hajo van den Honert (born June 3, 1899 in Baarn , † May 10, 1959 in Leiden ) was a Dutch botanist.

Life

Taco Hajo was the son of the former lieutenant at sea and later director of industry in Amsterdam Derk Jacob van den Honert (born December 19, 1863 in Amsterdam; † April 13, 1929 there) and his wife Clara Elisabeth Janssen, who married on October 31, 1895 in Amsterdam (Born November 30, 1875 in Amsterdam, † September 1950 in The Hague). He attended high school in Zutphen , where he obtained his university entrance qualification in 1917. He then completed his military service at the officers' school in Ede and began studying botany and zoology at the University of Utrecht in 1919 . In 1922 he passed his candidate exam , then worked for some time as an assistant to Hugo Frederik Nierstrasz and Hermann Jacques Jordan , and in 1926 he completed his doctorate in zoology. On June 13, 1928 he received his doctorate on the subject of Koolzuurassimilatie en beperkende factoren under Friedrich August Ferdinand Christian Went (1863-1935) as a doctor of natural sciences.

In the same year he moved to the Dutch East Indies , where he worked at a testing station for the Java sugar industry in Pasuruan. In 1935 Honert became a member of the National Science Council of the Dutch East Indies and from 1937 he worked at the botanical garden in Bogor , where he headed the Treub laboratory. From 1940 to 1942 he took over the management of the botanical garden, was captured after the Japanese attack and stayed in Cimahi , Singapore and Siam until the fighting ended . After his liberation he returned to the Netherlands, where he was appointed professor of botany at the University of Leiden on December 27, 1945. For this purpose, he gave the introductory speech on July 5, 1946 Ketenprocessen in de levende plans and was associated with the head of the Hortus Botanicus Leiden . In 1951 he became a member of the Royal Dutch Academy of Sciences .

Honert was primarily concerned with the physiology of plants. His research focused primarily on the interrelationships between photosynthesis in plants in the air and in the soil. Internationally he drew attention to himself in the field of ion exchange in plants and the associated water balance. In cooperation with the nitrogen fertilizer industry, a special foundation for the nutritional physiological examination of plants was set up. This laboratory was inaugurated in 1954 in the Hortus. Honert, who was associated with the English Society for Experimental Biology, was also a member of the Dutch chemical industry's commissions on nitrogen and potash fertilization of plants. After a study trip to the United States, he returned to the Netherlands sick. His health did not improve and he eventually passed away.

family

Honert had on June 21, 1928 in Utrecht Elisabeth Revers (born April 8, 1900 in Bergen op Zoom; † April 27, 1973 in Leiden), the daughter of Cornelis Emanuel Revers (born March 26, 1862 in Utrecht; † August 4 1910 in Bergen op Zoom) and Margaretha Henrietta Carolina Voss (born August 10, 1869 in Utrecht, † July 7, 1923 in Haarlem), married. There are three children from the marriage. The daughter Margaretha van den Honert (born March 18, 1929 in Pasuruan (Pasoeroean)) married Peter Ernst Sillem (born April 3, 1929 in Amsterdam, † January 1, 1964 in Hermiston) in December 1952. The son Taco Hajo van den Honert (* December 5, 1930 in Pasuruan (Pasoeroean)) married ER Kessler (* 1931) in March 1960 in Leiden. The Dutch hockey player and Olympic medalist Taco Hajo van den Honert (hockey player) comes from the marriage . Alexander van den Honert (born August 20, 1935 in Pasuruan (Pasoeroean)) married W. Aalders.

Works (selection)

  • Over de oorzaak van de zogenaamste Kalimatiziekte. 1931
  • Onderzoekingen over de voedingsfysiologie van het suikerriet. 1932 & 1933, 2nd vol.
  • On the mechanism of the transport of the organic materials in plants. 1932
  • A method for the determination of esmotic quantities by means of the vapor tension. 1935
  • Experiments on the water household of tropical plants. 1941

literature

  • VJ Koningsbergen: Levens report TH van den Honert. In: Jaarboek van de Koninklijke Akademie van Wetenschappen. 1958–1959, Amsterdam, pp. 304–308 ( Online PDF )
  • Bijna 60 jaar oud. Prof. Dr. TH vd Honert plotseling overled. In: Leidsch Dagblad. May 11, 1959, p. 3 ( online )

Individual evidence

  1. ↑ after the marriage had been divorced on November 23, 1911, she married the physician Pieter Leendert van der Harst (born January 16, 1865 in Leiden; † December 6, 1936 Arnhem) on August 2, 1917 in Amsterdam, who had previously worked with Adriana Elisabeth van der Meer (born April 24, 1863 in Leiden; † February 10, 1944 in Haarlem) was married on December 9, 1881 (Didericus Gijsbertus van Epen: Nederland's patriciaat. Centraal bureau voor genealogie en heraldick, The Hague, 1945, volume 31, p. 165)
  2. ^ Album Promotorum der Rijksuniversiteit Utrecht 1815-1936 en Album Promotorum der Veeartsenijkundige Hoogeschool 1918-1925. EJ Brill, Leiden, 1963, p. 258
  3. ↑ Album Scholasticum Academiae Lugduno-Batavae MCMXL-MCMLXXIV. Leidsch Universiteits Fonds, Leiden, 1975, p. 49
  4. ↑ Entry at the Dutch Academy of Sciences (KNAW)
personal data
SURNAME Honert, Taco Hajo van den
BRIEF DESCRIPTION Dutch botanist
DATE OF BIRTH June 3, 1899
PLACE OF BIRTH Baarn
DATE OF DEATH May 10, 1959
Place of death Suffer