Soil Color
Soil color gives information about organic matter in the soil, drainage,
biotic activity, and fertility.
|
Condition
|
Dark (dark grey, brown to black)
|
moderately dark (brown to yellow brown)
|
light (pale brown, yellow)
|
|
organic matter
|
high |
medium |
low |
|
erosion factor
|
low |
medium |
high |
|
aeration
|
high |
medium |
low |
|
Available nitrogen
|
high |
medium |
low |
|
fertility
|
high |
medium |
low |
|
Condition
|
Subsurface soil color
|
|
water-logged soils, poor aeration |
dull grey
(if in low rainfall soils 0-20 in.) |
|
well drained soils |
yellow, red-brown, black
(if in forest soils) |
|
somewhat poorly drained soils |
mottled grey (if in humid soils) |
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