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Soil Science Society of America Journal Abstract -

A Comparative Study of Developmental Color in a Chestnut-Chernozem-Brunizem Soil Climosequence1


This article in SSSAJ

  1. Vol. 29 No. 5, p. 579-582
    Received: Jan 20, 1965
    Accepted: Apr 27, 1965

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  1. G. J. Buntley and
  2. F. C. Westin2



A comparative study was made of the function of the interaction of the hue and chroma color components on the genetic or developmental color in seven well-drained soil profiles arrayed across a Chestnut-Chernozem-Brunizem soil climosequence. Earlier attempts to assess the aspect of developmental color associated with hue and chroma on the basis of hue alone or chroma alone have not proven satisfactory, especially in grassland soils. The numerical method used in this study involves the interaction of the hue and chroma components. Quantitative numerical color-development equivalents were obtained for the individual horizons in each profile studied. This made possible the graphic portrayal of the color-development profile which in turn facilitated the direct comparison of the distribution and magnitude of the developmental color in the profiles in the climosequence. Among the profiles studied, characteristic color-development curves were obtained for the Chestnut, Chernozem, and Brunizem profiles as well as for the intergradational profiles. The curves obtained appear to comprise an evolutionary sequence of color development across the climosequence of the grassland soils used in this study.

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