Laserfiche WebLink
• of range that are producing more woody shrubs than were present in the poten- <br />tial plant community. If the range vegetation is seriously deteriorated, <br />seeding is needed. The plants selected for seeding should meet the seasonal <br />requirements of livestock or wildlife, or both. <br />If this unit is used for crops, the main limitations are the hazard of <br />water erosion and the short growing season. Crop residue left on or near the <br />surface helps to conserve moisture, maintain tilth, and control erosion. <br />Erosion can be reduced if fall grain is seeded early, stubble-mulch tillage is <br />used, and tillage and seeding are on the contour or across the slope. Also, <br />waterways should be shaped and seeded to perennial grass. <br />If this unit is used for homesite development, the main limitations are <br />shrink-swell potential, very slow permeability and low strength. If build- <br />ings are constructed on this soil, properly designing foundations and foot- <br />ings and diverting runoff away from buildings help to prevent structural <br />damage because of shrinking and swelling. The effects of shrinking and <br />swelling can be minimized by using proper engineering designs and by back- <br />' filling with material that has low shrink-swell potential. Permeability is <br />very slow. Use of sandy backfill for the trench and long absorption lines <br />helps to compensate for the very slow permeability. Buildings and roads <br />should be designed to offset the limited ability of the soil in this unit to <br />support a load. <br />This map unit is in capability subclass VIe. It is in mountain Loam <br />range site. <br />X2F--Parachute-Merino Canplex, 25 to 65 percent slopes. This unit is on <br />steep mountainous slopes. The parent material is Williams Fork or Illes <br />sandstone overlying Lewis shale. <br />Two kinds of soil make up the complex. The Parachute or about 70 percent <br />consists of colluvium from sandstone and shale. It is moderately deep, well <br />drained and moderately permeable. Because it overlies sandstone or shale <br />• material at about 24 inches of water holding capacity is moderate. The Merino <br />Ex. 16-5 <br />