_PERMIT FILE - M1974070 ‎(76)‎

• Permit No: M1974070
• IBM Index Class Name: Permit File
• Section_Exhibit Name: EXHIBIT I-SOILS
• Media Type: D
• Archive: No

I
56A-B - Nunn loam, 1 to 3 percent slope
This is a deep, well drained soil on terraces at elevations of 4550 to
5000 feet. It formed in mixed alluvium.
;::..
Included in this unit are some long narrow streaks of sand and gravel
deposits. Some leveled areas were also included in mapping.
Typically the surface layer is grayish brown loam about 12 inches thick.
The subsoil is light brownish gray clay loam about 12 inches thick. The
substratum, to a depth of 60 inches , is a liglit clay loam. In some
areas , the lower part of the substratum, below 30 to 36 inches , is a I�
loam, sandy loam or gravelly sandy loam.
Permeability is moderately slow, Available water capacity is high.
Effective rooting depth is 60 inches or more. Surface runoff is medium
�—' and erosion hazard is low. I
11here irrigated this soil is suited to all crops adapted to this area,
I
including corn, sugar beets , beans , alfalfa, small grains , potatoes and
onions , An example of a suitable cropping system is alfalfa 3 to 4
years followed by corn, corn for silage , sugar beets , small grain, beans �
and back to alfalfa. The soil nornally has some slight restriction for
some crops such as high clay content or rapidly permeable subsLratums.
All methods of irrigation are suitable with furrow irrigation the most
common type used, rroper irrigation water management is essential.
Barnyard manure and commercial fertilizers are needed for top yields
along with maintaining good organic matter content .
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