Genesis and Classification Considerations of Some Prairie-Formed Soil Profiles From Local Alluvium in Adair County, Iowa

Authors

F. F. Riecken, Iowa State UniversityFollow
Ernest Poetsch, Iowa State University

Document Type

Research

Abstract

Data are presented on three profiles formed under prairie from Late Wisconsin to Recent age local alluvium of moderately fine texture. In the upper 20 inches nitrogen and base saturation values are quite similar to those found for normative upland Brunizems. Below 20 to about 50 inches, nitrogen and base saturation values decrease and increase, respectively, more slowly in the local alluvium-formed soils. It is suggested that the classic ABC soil genesis concept does not apply to the local alluvium-formed soils of this study. Rather, through cumulative effects of new parent material at the surface, this new C was transformed to an A^c horizon (c for cumulative effect), the former A₁ was transformed to a B^c horizon, and the former B became a substratum C^c horizon. Soil genesis effects in such cumulative soil genesis systems need further attention, as these soils comprise about one-fourth of the land area of Iowa, are important agriculturally, and an understanding will further knowledge of other soils of Iowa.

Publication Date

1960

Journal Title

Proceedings of the Iowa Academy of Science

Volume

67

Issue

1

First Page

268

Last Page

276

Copyright

©1960 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Recommended Citation

Riecken, F. F. and Poetsch, Ernest (1960) "Genesis and Classification Considerations of Some Prairie-Formed Soil Profiles From Local Alluvium in Adair County, Iowa," Proceedings of the Iowa Academy of Science, 67(1), 268-276.
Available at: https://scholarworks.uni.edu/pias/vol67/iss1/39