Paul Holdefleiß

from Wikipedia, the free encyclopedia

Paul Holdefleiß (born September 15, 1865 in Salzmünde , † March 15, 1940 in Halle (Saale) ) was a German agricultural scientist with encyclopedic interests. He is one of the leading co-founders of agricultural meteorology .

Life path

Paul Holdefleiß, son of an economics inspector, brother of Friedrich Holdefleiß , first completed an apprenticeship for several years in a sugar factory and on several beet farms. In 1890 he began studying agriculture at the University of Wroclaw . During his studies he became a member of the Association of German Students in Breslau . In 1891 he moved to the University of Halle (Saale) and received his doctorate there in 1894 with a dissertation on the importance of crude fiber for animal nutrition . As Julius Kühn's assistant , he continued to deal mainly with questions of animal nutrition and feed quality in the following years . In 1897 he completed his habilitation in Halle with an experimental thesis on the composition of straw and chaff types .

Holdefleiß worked as a university professor in Halle until his death. After five years as a private lecturer, he was appointed associate professor for agriculture and head of the crop production and meteorology department of the Agricultural Institute of the University of Halle. From 1920 he worked as a full professor at the newly founded Institute for Plant Cultivation and Plant Breeding.

Teaching and research

Holdefleiß was a representative of the idea of ​​a universal agricultural science in the sense of Julius Kühn . Initially, the focus of his scientific work was in the areas of animal nutrition and breeding. After 1900 he turned more to plant cultivation and other areas of plant production theory. For a long time he paid special attention to plant breeding . He gave lectures on this subject and in 1908 published a book on " Agricultural Plant Breeding ". In collaboration with Theodor Roemer , he promoted the breeding of protein-rich wheat varieties and improved the methods for determining the quality of bread grain.

As a young lecturer, Holdefleiß recognized the high value of longer-term weather forecasts for agriculture. His first agrometeorological contribution " The importance of meteorology for the farmer " appeared in 1899 in "Fühling's Landwirtschaftlicher Zeitung". In the following three decades Holdfleiß dealt particularly intensively with the influence of weather on the yields of agricultural crops. At the same time he tried to familiarize farmers with the latest findings in meteorology. Numerous magazine articles and several book publications served this goal. His main scientific work in this field is the book “ Agrarmeteorologie. The dependency of crop yields on weather and climate ”. Holdfleiß is one of the leading co-founders of agricultural meteorology .

Of his book publications, “ Der Wiesenbau ” (1919) and the “ Introduction to the Terms of Agriculture ” (1923) should also be emphasized . He published several comprehensive overview articles on topics from the field of plant production theory in the journal "Kühn-Archiv". In other articles he also dealt with social problems in agriculture. He has repeatedly honored Julius Kühn's life's work , including as co-editor of a commemorative publication on the occasion of his 80th birthday.

Honors

In 1906 he was elected a member of the German Academy of Sciences Leopoldina .

Books and writings

  • Report on the celebration of the 70th birthday of Julius Kühn, made on behalf of the festival committee (with Max Ohnefalsch-Richter). Hall 1895.
  • The importance of meteorology for the farmer . In: Fühling's Landwirtschaftliche Zeitung vol. 48, 1899, pp. 324-330 u. 361-366. Zugl. as a separate print from Hugo Voigt Leipzig 1899.
  • Business apprenticeship for the small farmer . Verlag Eugen Ulmer Stuttgart 1903 = Des Landmanns Winter Evenings Vol. 25.
  • Julius Kühn - his life and work. Festschrift for the 80th birthday on October 23, 1905 . Published by F. Wohltmann and P. Holdefleiß on behalf of the festival committee. Paul Parey Berlin 1905.
  • Weather science for farmers. Instructions for making meteorological observations and using weather maps . Publishing house Eugen Ulmer Stuttgart 1907.
  • Agricultural plant breeding . Verlag Max Jaenecke Hannover 1908. New edition: Leipzig 1921 = Handbook for the whole of agriculture, Dept. 33–37.
  • General animal breeding. Feeding doctrine . Verlag Max Jaenicke Hannover 1907. New edition: Leipzig 1921 = Handbook for the whole of agriculture, Dept. 60 u. 61.
  • Agricultural taxation theory and net income assessment . Verlag Max Jaenecke Hanover 1908. - 2. new edit. Ed. Verlag Paul Parey Berlin 1922 = Thaer Library Vol. 39.
  • Agriculture in: Philipp Zorn , Herbert von Berger (editor): Germany under Kaiser Wilhelm II. Ed. by Siegfried Körte, Friedrich Wilhelm von Loebell and others 3 volumes. R. Hobbing, Berlin 1914.
  • F. Knauer's beet growing. For farmers and sugar manufacturers . Revised and edited by P. Holdfleiß. Verlag Paul Parey Berlin 10th edition 1912; 11th edition 1917, 12th edition 1923 = Thaer-Bibliothek vol. 19.
  • The meadow construction . Verlag E. Meyer Friedrichswerth 1918 = Agricultural Library Vol. 15.
  • Introduction to the terms of agriculture . Verlag Quelle & Meyer Leipzig 1923 = Science and Education Vol. 192.
  • Agrometeorology. The dependency of crop yields on weather and climate . Publisher Paul Parey Berlin 1930.

literature

  • Publications by University Professor Dr. Paul Holdefleiß . Typewritten duplicated separately. Hall [1938]. - Specimen copy in: University and State Library Halle (Saale).
  • Prof. Dr. Paul Holdefleiß † March 15, 1940 . In: Kühn Archive Vol. 54, 1940, before p. 1 (with picture).
  • Theodor Roemer: Professor Dr. Paul Holdefleiß † . In: Der Forschungsdienst Vol. 9, 1940, p. 488.
  • Walter Heinrich Fuchs:  Holdefleiß, Paul. In: New German Biography (NDB). Volume 9, Duncker & Humblot, Berlin 1972, ISBN 3-428-00190-7 , p. 524 f. ( Digitized version ).
  • Henrik Eberle: The Martin Luther University in the time of National Socialism. Mdv, Halle 2002, ISBN 3-89812-150-X , p. 417

Web links

Individual evidence

  1. ^ Hans Güldner, Kyffhäuser Association of German Student Associations : Directory of honorary members and old men. Gütersloh 1899, p. 21.
  2. ^ Member entry by Paul Holdefleiss at the German Academy of Natural Scientists Leopoldina , accessed on November 30, 2015.
personal data
SURNAME Hold diligence, Paul
BRIEF DESCRIPTION German agricultural scientist
DATE OF BIRTH September 15, 1865
PLACE OF BIRTH Salzmünde , Saxony-Anhalt
DATE OF DEATH March 15, 1940
Place of death Halle (Saale)