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1 <br /> 15 <br /> l <br /> 4 132 kg N per hectare <br /> 5 66 kg N per hectare + excelsior mulch <br /> 6 132 kg N per hectare + excelsior mulch <br /> 7 66 kg N per hectare + straw mulch <br /> 8 132 kg N per hectare + straw mulch <br /> The phosphorus and gypsum were surfaced applied and worked into the <br /> waste material by rototilling. The nitrogen, as ammonium nitrate, was <br /> added in split applications, one-half in November 1976 and the remainder <br /> in May 1977. <br /> The subplots were broadcast seeded with a mixture of native and <br /> introduced grasses, forbs and shrubs in November 1976. The seed was <br /> applied at a rate of 12.8 kg of pure live seed per hectare (634 PLS per <br /> m2) and raked lightly to turn the seed under. Table 4 contains the <br /> It <br /> complete mixture for the Main Plot. The appropriate mulch was then <br /> applied to the designated subplots (Figure 4) . <br /> Species Evaluation Plot. Two rows of 40 plant species were <br /> seeded in two replications with three 15 foot rows per replication. <br /> t <br /> i Nitrogen was applied at a rate of 66 kg N per hectare and phosphorus <br /> at a rate of 220 kg P 2 0 5 per hectare before seeding was performed. The <br /> species seeded are contained in Table 5. <br /> Slope Plots. These plots were constructed in October 1977 on a <br /> southeast-facing slope of deep mine waste material (Figure 5) . One <br /> plot is graded on a 3:1 slope and the second is graded to 1 .5:1 . The <br /> three treatments used are as follows: <br />