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 Fly, C. L. Articles by Romine, D. S. Search for Related Content PubMed Articles by Fly, C. L. Articles by Romine, D. S. Agricola Articles by Fly, C. L. Articles by Romine, D. S.

Distribution Patterns of the Weld-Rago Soil Association in Relation to Research Planning and Interpretation¹

ABSTRACT

This study is concerned with criteria for predicting applicability to other soils of research results obtained from key or benchmark soils. Soil-water-plant growth relations which affect yields under different levels of management were evaluated at Akron, Colo. Under 46 years of uniform management, wheat production levels varied from 73 to 120 among eight soil types identified in a 25-acre test field formerly mapped as one soil type. Soil differences induced wider variations under uniform treatment than did different treatments on a single soil type. When the detail of delineation and characterization of soils is comparable to the detail of the research plot layout, existing research fields and plot data may be used to associate soil qualities with response to treatment. The reliability of application of research findings to other areas will depend on adequate characterization and evaluation of the soil in each plot.

¹ Joint contribution from the Soil and Water Conservation Research Division, ARS, USDA, and the Department of Agronomy, Colorado Agr. Exp. Sta. (Project 141). Presented before Div. VI, Soil Sci. Soc. Am., Ithaca, N. Y., Aug., 1962.

² Soil Scientist, USDA, Fort Collins, Colo., and Associate Professor of Soils, Colorado State University, Fort Collins, respectively.

Received for publication April 10, 1963. Accepted for publication August 26, 1963.