A study was made of the numbers of Nitrosomonas, bacteria capable of oxidizing ammonia to nitrite, in variously treated soils of the Agronomy Farm at Iowa State College, and of certain other soils of the state. The dilution method, as modified by Wilson for the study of these organisms was employed for making the determinations.
Proceedings of the Iowa Academy of Science
©1935 Iowa Academy of Science, Inc.
Walker, R. H.; Klingebiel, A. A.; and Greiner, L. M.
"The Numbers of Nitrosomonas in Some Variously Treated Iowa Soils,"
Proceedings of the Iowa Academy of Science, 42(1), 89-89.
Available at: https://scholarworks.uni.edu/pias/vol42/iss1/21