Recent developments in soil science have called attention to the importance of studying and describing soils according to their profile characteristics. The various horizons or layers represented in each profile have certain definite and significant characteristics which may aid in the classification of the soils and may also have some effect on the fertility or crop producing power of the soil. The chemical and physical properties of the distinct horizons in typical soil profiles are being studied and some interesting data are being secured. The study will not be complete, however, until there is investigation of the biological properties of the profiles.
Proceedings of the Iowa Academy of Science
©1928 Iowa Academy of Science, Inc.
Brown, P. E. and Benton, T. H.
"Bacteria in Some Iowa Soil Profiles,"
Proceedings of the Iowa Academy of Science, 35(1), 75-79.
Available at: https://scholarworks.uni.edu/pias/vol35/iss1/10