HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Asady, G. H. Articles by Whiteside, E. P. Search for Related Content PubMed Articles by Asady, G. H. Articles by Whiteside, E. P. Agricola Articles by Asady, G. H. Articles by Whiteside, E. P.

Composition of a Conover-Brookston Map Unit in Southeastern Michigan¹

ABSTRACT

A Conover-Brookston soil mapping unit, named on the basis of point-transect observations after its delineation, was reevaluated through laboratory characterization of the major components of this map unit. Eight Conover (fine-loamy, mixed, mesic Udollic Ochraqualf) and eight Brookston (fine-loamy, mixed, mesic Typic Argiaquoll) pedons, identified by the transect observations, were investigated by laboratory determinations.

The particle-size distributions indicated some translocation of clay from the surface to the subsoil in each series. However, even in those pedons with other characteristics of an argillic horizon, the ratios of fine-clay in total clay of B2/Ap horizons were insufficient for an argillic horizon as defined in Soil Taxonomy. Alternative criteria are proposed.

The 16 pedons covered the whole particle-size range of the fineloamy family. The transects of the map unit after its delineation overestimated its homogeneity, judged by the laboratory analyses.

¹ Journal Article no. 10,000, Michigan Agric. Exp. Stn., Michigan State Univ., East Lansing, MI 48824.

² Graduate Student and Professor Emeritus of Soil Science, Dep. of Crop and Soil Sciences, MSU, respectively.

Received for publication July 13, 1981. Accepted for publication April 20, 1982.