Background
Christensen, Jonas Jergen was born on August 22, 1892 in Hutchinson, Minnesota, United States. Son of Chris C. and Christina (Borg) Christensen.
Christensen, Jonas Jergen was born on August 22, 1892 in Hutchinson, Minnesota, United States. Son of Chris C. and Christina (Borg) Christensen.
Bachelor of Science, University of Minnesota, 1921, Master of Science, 1922, Doctor of Philosophy, 1925. Guggenheim Memorial fellowship for study in Germany and other countries, 1929-1930.
Rural school teacher, Mercer, North Dakota, 1915-1916. Instructor plant pathology University of Minnesota, 1920-1925, assistant professor, 1925-1931, associate professor, 1931-1938, professor, 1938-1961, acting chief 1948-1953, head department, 1953-1961, now professor emeritus. Also federal collaborator in charge Cooperative Rust Laboratory.
Agent United States Department of Agriculture, 1922-1929 and 1930-1937.
Visiting expert North.R.S., General Headquarters, South Carolina.A.P., Jap., 1950. Consultant Chemical Corps, A.U.S., since 1947.
Served as sergeant, Medical Corps, United States Army, 1917-1919. Fellow of the American Association for the Advancement of Science. Member American (president 1944, president North Central division 1957), Japanese phytopath. societies, American Association University Professors, Mycological Society of America, Botanical Society of Am, Indian Phytopath.
Society Flax Institute of the United States, Minnesota Agricultural College Alumni Association (secretary-treasurer 1940-1941), Minnesota Academy Science, Biological.
Club, Sigma Xi (vice president Minnesota chapter. 1944. president 1949), Alpha Zeta, Gamma Sigma Delta (vice president Minnesota 1944), Gamma Alpha.
Married Hildur Minerva Lundeen, August 16, 1922. Children: Philip, Donn, Robert.