Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart
Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart
Soil Survey of Sweet Grass County Area, Montana - Soil Data Mart
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198 <strong>Soil</strong> <strong>Survey</strong><br />
Management<br />
For management information about this map unit,<br />
see appropriate sections in Part II <strong>of</strong> this publication.<br />
161B—<strong>Mart</strong>insdale gravelly loam,<br />
0 to 4 percent slopes<br />
Setting<br />
Elevation: 4,200 to 6,000 feet<br />
Mean annual precipitation: 15 to 19 inches<br />
Frost-free period: 85 to 115 days<br />
Major Component Description<br />
<strong>Mart</strong>insdale and similar soils<br />
Composition: 85 percent<br />
Geomorphic description: Tread on terrace<br />
Slope: 0 to 4 percent<br />
Elevation: 4,200 to 6,000 feet<br />
Effective annual precipitation: 15 to 19 inches<br />
Frost-free period: 85 to 115 days<br />
Surface layer texture: Gravelly loam<br />
Drainage class: Well drained<br />
Parent material: Loamy alluvium<br />
Native plant cover type: Rangeland<br />
Available water capacity: Mainly 7.7 inches<br />
Additional Components<br />
Fairfield and similar soils: 4 percent<br />
Farnuf and similar soils: 4 percent<br />
Shawmut and similar soils: 4 percent<br />
Tamaneen and similar soils: 3 percent<br />
Management<br />
For management information about this map unit,<br />
see appropriate sections in Part II <strong>of</strong> this publication.<br />
161C—<strong>Mart</strong>insdale gravelly loam, 4 to 8<br />
percent slopes<br />
Setting<br />
Elevation: 4,200 to 6,000 feet<br />
Mean annual precipitation: 15 to 19 inches<br />
Frost-free period: 85 to 115 days<br />
Major Component Description<br />
<strong>Mart</strong>insdale and similar soils<br />
Composition: 85 percent<br />
Geomorphic description: Fan<br />
Slope: 4 to 8 percent<br />
Elevation: 4,200 to 6,000 feet<br />
Effective annual precipitation: 15 to 19 inches<br />
Frost-free period: 85 to 115 days<br />
Surface layer texture: Gravelly loam<br />
Drainage class: Well drained<br />
Parent material: Loamy alluvium<br />
Native plant cover type: Rangeland<br />
Available water capacity: Mainly 9.0 inches<br />
Additional Components<br />
Fairfield and similar soils: 4 percent<br />
Farnuf and similar soils: 4 percent<br />
Shawmut and similar soils: 4 percent<br />
Tamaneen and similar soils: 3 percent<br />
Management<br />
For management information about this map unit,<br />
see appropriate sections in Part II <strong>of</strong> this publication.<br />
163C—Absher clay, 0 to 8 percent slopes<br />
Setting<br />
Landscape: Sedimentary plains<br />
Elevation: 3,750 to 5,200 feet<br />
Mean annual precipitation: 10 to 14 inches<br />
Frost-free period: 95 to 125 days<br />
Major Component Description<br />
Absher and similar soils<br />
Composition: 85 percent<br />
Geomorphic description: Tread on stream terrace<br />
Slope: 0 to 8 percent<br />
Elevation: 3,750 to 5,200 feet<br />
Effective annual precipitation: 10 to 14 inches<br />
Frost-free period: 95 to 125 days<br />
Surface layer texture: Clay<br />
Drainage class: Well drained<br />
Parent material: Silty and clayey alluvium weathered<br />
from igneous and sedimentary rock<br />
Native plant cover type: Rangeland<br />
Salt affected: Saline within 30 inches<br />
Sodium affected: Sodic within 30 inches<br />
Available water capacity: Mainly 3.9 inches<br />
Additional Components<br />
Creed and similar soils: 4 percent<br />
Gerdrum and similar soils: 4 percent<br />
Lallie and similar soils: 3 percent<br />
Ledger and similar soils: 2 percent<br />
Thibadeau and similar soils: 2 percent<br />
Management<br />
For management information about this map unit,<br />
see appropriate sections in Part II <strong>of</strong> this publication.
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