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Research was conducted on topsoiled strip mined lands at Colstrip, Mon., over a 6-year period to evaluate germination, survival, productivity, and cover characteristics of Eski sainfoin (Onobrythis viciwfolia), Lutana cicer milkvetch (Astragalus cicer), birdsfoot trefoil (Lotus cornicuhztus), and ranger and spreader alfalfa (Medicago sativa). Nitrogen and phosphorus fertilizer were ap plied at a low rate during the first year of study. None of the experimental units received irrigation. Lutana cicer milkvetch and both varieties of alfalfa demonstrated good establishment, survival, canopy cover, and productivity characteristics. Eski sainfoin showed good initial establishment but declined in following years. Birdsfoot trefoil appeared to be unsuitable for revegetation of mined lands at Colstrip. Spreader alfalfa was superior to ranger alfalfa in the parameters evaluated. Lutana cicer milkvetch showed much potential for mined lands revegetation in the study area because of site stabilization, persistence, palatability, nitrogen fixation, and productivity characteristics. Revegetation of coal strip mined lands in the Northern Great Plains has received considerable attention in recent years due to acceleration of mining and associated land disturbance. A number of investigations have been reported comparing the establishment of different grass species on strip mined lands in the Northern Great Plains (Sindelar et 1973; Farmer et al. 1974; Meyn et al., 1976; DePuit et al. 1977; DePuit et al. 1978; DePuit and Coenenberg, 1979; Holechek 198 1, 1982; Holechek et al. 198 la,b). Several legumes have shown potential on strip mined lands at Colstrip, Mon. and other mining locations in the Northern Great Plains (Sindelar et al. 1973; Sindelar et al. 1974; Dollhopf and Majerus 1975; DePuit and Coenenberg 1977; Holechek 1981,1982). These include ranger and spreader alfalfa (Medicago saliva), Eski sainfoin (Onobrychis viciaefolia), and Lutana cicer milkvetch (Astragalus cicer). However, specific research has not been conducted to compare the effectiveness of these species in revegetating strip mine lands in the Northern Great Plains. The objectives of this study were to determine the emergence, survival, productivity, and cover characteristics of the four legume species previously mentioned and birdsfoot trefoil (Lotus corniculatus) on mined lands at Colstrip, Mon.

Legume Establishment on Strip Mined Lands in Southeastern Montana