soil color. determinants of soil color soil color determinants of soil color 1. parent material 2....
TRANSCRIPT
SOIL COLOR
SOIL COLORDETERMINANTS OF SOIL COLOR
SOIL COLORDETERMINANTS OF SOIL COLOR
1. Parent Material2. Vegetation
Prairie vs. Forest
3. Age4. Topography
TOP SOIL COLORINDICATES THE AMOUNT OF ORGANIC MATTER
IN THE SOIL
Black or Dark Brown - generally regarded as most productive
Red or Brown - considered less fertile than black
SOIL COLOR
MUNSELL COLOR CHARTS
SUBSOIL COLOR
Can the color of the soil 1' to 6' under the surface be really that important?
SUBSOIL COLOR
Subsoil color is an indication of drainage ability.
SUBSOIL COLOR
COLOR DRAINAGE
Brown/Red ExcellentBright Yellow Moderate
Pale Yellow FairGray Poor
Dark Variable
SUBSOIL COLOR
What causes a subsoil to be red or brown?
Iron x Oxygen = red “Oxidation”
If pore space is filled with water, oxidation can not occur.
SUBSOIL COLOR
MOTTLED
SUBSOIL COLOR
MOTTLED - Mixtures of gray, yellow, brown. Marked with spots of colors.
Indicates water saturation at times and not at others.
SUBSOIL COLORDRAINAGE CLASSES
SUBSOIL COLORDRAINAGE CLASSES
Well drained - Brown to yellowish brown subsoil. Water table fluctuates below the
subsoil nearly all the time.
SUBSOIL COLORDRAINAGE CLASSES
Moderately Well Drained - brown in upper 24", mottling below.
SUBSOIL COLORDRAINAGE CLASSES
Somewhat poorly drained - Gray and brown mottled subsoils. Water table
reaches the top of the subsoil.
SUBSOIL COLORDRAINAGE CLASSES
Poorly drained or Very poorly drained - Gray or olive gray subsoil. Water table is near the top of the soil for most of the
year.
Have a nice day!