Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 42 (1935) > Annual Issue
Document Type
Research
Abstract
Berthelot in 1888 was the first to suggest that nitrogen may be added to field soils through the activity of microorganisms. In 1901 Beijerinck isolated a non-symbiotic, aerobic, nitrogen-fixing organism which he called Azotobacter chroococcum. Since this time five other species belonging to this genus have been isolated and likewise have been found capable of fixing atmospheric nitrogen.
Publication Date
1935
Journal Title
Proceedings of the Iowa Academy of Science
Volume
42
Issue
1
First Page
55
Last Page
61
Copyright
©1935 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Martin, William P. and Walker, R. H.
(1935)
"Preliminary Investigation of the Occurrence and Distribution of Azotobacter on the Soils in Iowa,"
Proceedings of the Iowa Academy of Science, 42(1), 55-61.
Available at:
https://scholarworks.uni.edu/pias/vol42/iss1/10