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    Author(s): Tom D. Anderson; Arthur R. Tiedemann
    Date: 1970
    Source: PNW Old Series Research Note PNW-125: 11 p
    Publication Series: Research Paper (RP)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (990 KB)

    Description

    Soils derived from two widely distributed parent materials in central Washington were examined periodically during 1968-69 for physical and chemical properties. Basalt soils showed significant periodic variation in cation exchange capacity, pH, and Na and K contents. In sandstone soils, cation exchange capacity and Ca, Na, and K contents varied significantly among sampling dates. Although certain physical properties showed definite trends, none were statistically significant.

    These results indicate that, where sampling dates vary, periodic variation in certain chemical properties of these soils may be a confounding factor in evaluating research findings or management prescriptions.

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    Citation

    Anderson, Tom D.; Tiedemann, Arthur R. 1970. Periodic variation in physical and chemical properties of two central Washington soils. PNW Old Series Research Note PNW-125: 11 p

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