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• Ladak, a better known field strain, also derived from sickle alfalfa, is also <br />well adapted to rangelands, but may be less persistent than some others. Since <br />its seed is often more readily available, it can be used advantageously in mix- <br />tures with any or all of the strains mentioned above. Where seed of several <br />strains is available, but the best one is not known, a mixture may be used to <br />fill the alfalfa component for a given planting. The strains mentioned above <br />have shown unusual persistence and production under grazing even though they are <br />often grazed more heavily than associated plants (Plummer, et.al., 1968). <br />According to Valentine (1974), the rhizomatous alfalfa varieties such as Rambler, <br />Travois, and Teton are the most desirable for range seeding. They are able to <br />withstand attacks by gophers, withstand grazing and are able to survive under <br />dryland conditions. <br />Cook et.al. (1974) recommends that alfalfa be included in a seed mix for the <br />mountain brush type and the big sagebrush -grass type. <br />• Sanguisorba minor <br />small burnet <br />Small burnet is a low -growing but productive evergreen forb introduced from Spain <br />and adjacent countries from sites similar to the pinyon -juniper vegetation type. <br />It becomes established and develops quickly throughout most of the pinyon -juni- <br />per belt, as well as on the drier exposures of the mountain brush vegetation type <br />and more favorable areas in the big sagebrush belt. Most plants appear to have a <br />life span of 7 to 12 years, but some have persisted for 20 years. Because its <br />seed is exceptionally attractive to rodents, increase from seed on trial areas <br />has been negligible. Seed is now commercially available. It is a preferred <br />plant of game animals, particularly in late winter and early spring (Plummer, <br />et.al., 1968). <br />3-135 <br />REVISED FEB 13 '87 <br />