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Table 2. Frequency within 20 x 20 cm quadrats of species seeded as a mixture on <br /> level rock waste over tailing plots in 1978. <br /> Species ff-O—So-1T <br /> TREATMENT <br /> Sewage Sludge* 10 cm soilt <br /> 18-46-0 t 44 a /ha cover <br /> Graminoids ---------------- « <br /> -----b---------------------- <br /> gros ti s a ba 19 15 6 4 <br /> Carex spp. 3 4 5 9 <br /> Deschampsia + Festuca 42 50 28 47 <br /> Phleum s 33 <br /> PP• 23 21 36 <br /> Poa alpina 15 33 19 16 <br /> Poa spp. 4 14 2 0 <br /> Trisetum spicatum 13 20 12 22 t <br /> Forbs <br /> c i ea lanulosa 42 61 74 95 <br /> Linaria vulgaris 9 67 80 62 <br /> t includes - - a in , an p <br /> kg/ha N in 1980 treatments. - - - 9 a in us 12 <br /> * includes 22 t/ha and 88 t/ha woodchip treatments <br /> Table 3. Frequency within 20 x 20 cm quadrats of species seeded as a mixture on <br /> steep slopes of rock waste over tailing plots in 1978. <br /> Treatment <br /> 0 of <br /> Species 1 - - a sewage s u ge 10 cm soil <br /> Graminoids <br /> gropyron spp. 0 3 <br /> 8romus spp. 0 0 <br /> 1 1 <br /> Carex 2 <1 0 <br /> Deschampsia + Festuca 5 12 20 <br /> Phleum spp. 0 2 1 <br /> Poa alpina 3 3 10 <br /> Poa spp. 2 6 2 <br /> Trisetum spicatum 1 15 5 <br /> Forbs <br /> Achil ea lanulosa 1 34 45 <br /> Epilobium angustifolium 0 5 9 <br /> Linaria vulgaris 0 51 63 <br /> Rumex spp. 0 1 1 <br /> Taraxicum spp. 0 2 1 <br />