. Make a table that best matches the following set of animals and crops with the soil unit most suitable for the crop or animal use, given the following information: Agricultural use: Walnuts do best with deep, well-drained soil. Lettuce can produce excellent crops in soils that have a good topsoil (A horizon) but a somewhat dense subsoil (B horizon) that has slow permeability. Wheat can produce very high yields without being irrigated if there is a high water table (in other words, a shallow depth to the water table). Goats eat a wide range of forage on rangelands, even in relatively steep mountainous areas. Soil units Land Capability Class rating: Marvin silty clay loam IIs-3 Positas gravelly loam, 30 to 50% slopes, eroded VIIe-3 Yolo silt loam I-1 Sacramento clay IIIw-5 key to subclasses: s = soil factor e = erosion hazard w = wetness limitation key to capability unit: 3 = A limitation caused by slow or very slow permeability of the subsoil 5 = A limitation caused by fine textured soil
3. Make a table that best matches the following set of animals and crops with the soil unit most suitable for the crop or animal use, given the following information:
Agricultural use:
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Walnuts do best with deep, well-drained soil.
-
Lettuce can produce excellent crops in soils that have a good topsoil (A horizon) but a somewhat dense subsoil (B horizon) that has slow permeability.
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Wheat can produce very high yields without being irrigated if there is a high water table (in other words, a shallow depth to the water table).
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Goats eat a wide range of forage on rangelands, even in relatively steep mountainous areas.
Soil units Land Capability Class rating:
Marvin silty clay loam IIs-3
Positas gravelly loam, 30 to 50% slopes, eroded VIIe-3
Yolo silt loam I-1
Sacramento clay IIIw-5
key to subclasses:
s = soil factor
e = erosion hazard
w = wetness limitation
key to capability unit:
3 = A limitation caused by slow or very slow permeability of the subsoil
5 = A limitation caused by fine textured soil
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