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• <br />• <br />• <br />Seed Mix #7 - Irrigated Alfalfa Hayland Mix <br />Species <br />Drilled <br />Rate lbs. <br />Scientific Name Common Name PLS /acre* <br />2 <br />Seeds /ft <br />1. Medicago sativa Alfalfa 6.5 33 <br />2. Dactylis ylomerata Orchardgrass 1.5 15 <br />8.0 48 <br />Note: Innoculate alfalfa with a specific strain of Rhizobium bacteria. <br />Seed Mix #7 - Recommended Varieties <br />Alfalfa - Lahontan (Vernal, Ladak 65, Dawson or other recommended flemish varieties)* <br />Orchardgrass - Latar <br />*Cultivars in parenthesis may be selected as alternatives. <br />All species contained in Seed Mixes #5, #6 and #7 are introduced with the exception of <br />reed canarygrass. The introduced species support the proposed postmining land use, and <br />the referenced literature and individuals (presented in the following paragraph) support <br />the fact that these species are desirable and necessary to achieve the postmining land <br />use. <br />Species selection for the irrigated pasture mixes was based on (1) irrigated pasture <br />mixtures should be simple, with one to two grasses and a legume (Heath et al. 1985 and <br />Stewart 1973); (2) the legume should be a persistent, adapted, non - bloating species; and <br />(3) the grass component should be palatable, nutritious, persistent and compatible in the <br />stand. Birdsfoot trefoil, selected as the legume for both mixes, is a long -lived <br />perennial forage legume that is non - bloating, winter hardy, and adapted to a range of site <br />conditions including poorly drained sites (Heath et al. 1985). Though a slow starter, <br />once established it is persistent in the stand, particularly if seeded in alternate rows. <br />The seed must be inoculated with a specific strain of Rhizobium bacteria. Peabody's <br />successful use of meadow brome in its operations at the Big Sky Mine in Montana is <br />supported by the enthusiastic recommendation of its use in irrigated pastures by the <br />Colorado State University Experiment Station and Cooperative Extension Service (D. Smith <br />and T. Doherty, personal communication, April 1988). Meadow brome is highly palatable but <br />persists well in irrigated pastures and has nutrient qualities at least as high as smooth <br />22 -22 Revised 07/25/91 <br />