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• � RANGE SITE NO. 30• • page 2 <br /> h •9 LOAMY BREAKS <br /> August 1975 <br /> :i• <br /> This site is treeless. Optimum ground cover is 20 percent . <br /> Invaders on this site are mainly Introduced species. <br /> Native (potential ) Vegetation and Guide for Determining Range <br /> Condition. <br /> Percentage composition by weight of the principal species may <br /> total as much as : <br /> Grasses and grasslike: <br /> Western wheatgrass ifj 10 <br /> Native bluegrasses 10 <br /> Bluebunch wheatgrass 4 <br /> Needle-and-thread + 5 <br /> Prairie Junegrass 5 <br /> Squirreltall 5 <br /> Forbs: <br /> Buckwheat T <br /> Arrowleaf balsamroot 5 „ r <br /> Lupine 5 <br /> Loco 5 �` o <br /> Stemless goldenweed 5 - <br /> Shrubs : <br /> Black and big sagebrush -2$ ;.•,) <br /> Antelope bitterbrush 10 <br /> Low rabbitbrush +R- S <br /> Mountain mahogany 5 <br /> Gray horsebrush 5 <br /> Servlceberry 5 <br /> Snakeweed T <br /> 4. Total Annual Production <br /> Favorable years 800 Pounds per Acre Air Dry <br /> Unfavorable years 400 " " " " " <br /> Med 1 all years 500 <br /> 5• Soils <br /> a. Soils in this site are shallow, brown to dark gray brown , <br /> medium textured loam or stony loam underlaid by sandstone <br /> or shale. The soils have moderate permeability, but due <br /> to the steep slopes, the effective moisture is reduced. <br /> This Is generally a droughty and unproductive site. <br /> b. Soils in this site are: <br /> i <br />