Soil Color

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<strong>Color</strong>ing agents in the soil ‣ Organic matter darkens the soil. Organic matter will mask all other coloring agents. ‣ Iron (Fe) is the primary coloring agent in the subsoil. The orange brown colors associated with well drained soils are the result of Fe oxide stains coating individual particles. ‣ Manganese (Mn) is common in some soils resulting in a very dark black or purplish black color.
<strong>Color</strong> Patterns ‣ Matrix color is the dominant color in the soil. ‣ Mottling is spots or blotches of color in the soil that differ from the matrix color. ‣ Redoximorphic features are mottles that relate to the aeration or drainage of the soil.
Page 1 and 2: Soil Color
Page 3 and 4: CIDWT/University Disclaimer These m
Page 5: ‣ Why color? Soil Color • It is
Page 9 and 10: Types of Coatings ‣ Organic matte
Page 11 and 12: Black organic coatings
Page 13 and 14: Fe-oxide coatings
Page 15 and 16: What color is this?
Page 17 and 18: What color is this?
Page 19 and 20: Spectrum
Page 21 and 22: Hue ‣ Hue is a measure of the chr
Page 23 and 24: Value ‣ Value indicates the degre
Page 25 and 26: Chroma ‣ Chroma is the relative p
Page 27 and 28: Munsell Color System ‣ Hue refers
Page 29 and 30: Gley Colors ‣ Refer to colors on
Page 31 and 32: Recording Soil Colors ‣ Soil shou
Page 33: Percent ‣ 20% - many
Page 36 and 37: Contrast ‣ Faint ‣ Distinct ‣
Page 38 and 39: Distinct Contrast ‣ Readily seen
Page 40 and 41: Prominent Contrast ‣ Strongly con
Page 42 and 43: Example Prominent 7 6 Distinct Valu
Page 44 and 45: Contrast Class Faint Distinct Promi
Page 46 and 47: Example Matrix 10YR 4/4 10YR 4/4 10
Page 48 and 49: Matrix Feature
Page 50 and 51: Feature 1 Feature 2 Matrix
Page 52: Feature 1 Feature 2 Matrix

Soil Color

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