5Y to 5R is the range for most soils Hue dominant spectral wavelength

5y to 5r is the range for most soils hue dominant

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5Y to 5R is the range for most soils Hue: dominant spectral wavelength HUE Value: lightness or darkness Chroma: purity of the hue, or dilution of hue with gray 0 1 8 8
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10/1/2019 9 5YR 5/4 5/4 reddish brown Dark colors are often indicative of good fertility and high organic matter content, however, some parent materials are dark in color, and as a result, may lead to an incorrect interpretation. Color; Indicator of Organic Matter
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10/1/2019 10 Color; Indicator of Drainage Brown, orange, and reddish colors are indicative of well drained soils. These soils are often very old and/or highly weathered. Color; Indicator of Drainage Causes: perched water, high ground water table, poor soil structure, high clay content, hence poor aeration Variegated color patterns of dull gray and bright orange called redoximorphic features are indicative of seasonal saturation.
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10/1/2019 11 What to look for: redox concentrations and depletions Manganese coatings (slow permeability) Redox depletions in a high chroma matrix Redox depletions Iron concentrations (Photo courtesy of Kerry Arroues, NRCS) Color; Indicator of Drainage Reduced matrix: Pale bluish or greenish-yellow colors are indicative of prolonged saturation but reduced iron is not leached away
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10/1/2019 12 White Color; Indicator of leaching or accumulation of salts Color Interpretation Red: hematite, Fe 2 O 3 , well aerated, strongly weathered Yellow: goethite, FeOOH, less aerated, but still oxidized Black: humified organic matter Brown: combination of Fe-oxides and oxyhdroxides and OM White: carbonate or evaporite accumulation OR
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