Soil Factors 1
Slope percentage that is gently sloping
2-6%
Slow permeability soils have a high content of this soil particle
Clay
Capability class that is the ideal land
Class I
Always select these numbers for a LC 1-4
8, 9, 10
The only time you select Nitrogen
Deficient
Erosion percentage with an original topsoil of 25" and new topsoil of 20"
20%
Topsoil thickness of 12+ inches is
Thick
Land capability class that goes with Class IV land
4. Row crop 1 out of 4 years
Select terraces for LC II, III, and IV with...
greater than 2% slope
Adequate pH level
6.5-7.9
The measurement from the bottom of the subsoil to the surface
Depth of Soil
Topsoil surface texture with less than 1 in. ribbon
Moderately coarse
Land capability class that we never check
5. Continuous wheat fallow
Select diversion terrace for ONLY this problem
Phosphorus requires an amendment if ___ lbs or less
60
Slope that is 11-17%
Strongly sloping
Moderate permeability has ribbons that are...
1 in.
Land classes that are used with a Land Capability Class 6
V-VII
Two numbers to select with sandy soil
11. Strip cropping and 12. Plant windbreak
T/F: 270 lbs of Potassium (K) requires an amendment
False
Permeability of a subsoil with a ribbon of 2.5 in. and mod fine texture
Moderately slow
Slope of 3 feet over 50 feet is
Moderately sloping
Land Capability Class used with Class VIII land
7. Use only for wildlife/recreation
Other numbers to select with 13 or 16
14, 15
Check yes or no for a pH of 6.4