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~ i5 <br />• ~ 4 132 kg N per hectare <br />J 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 rototiTling. The nitrogen, as ammonium nitrate, was <br />added in split applications, one-half in November 1976 and the remainder <br />in May 1977. <br />I The subplots were broadcast seeded with a mixture of native and <br />introduced grasses, fortis 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 />comple~e 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 ~0 <br />~ seeded in two replications with three 16 foot <br />i <br />I Nitrogen was applied at a rate of 66 kg N per <br />at a rate of 220 kg P206 per hectare before s. <br />species seeded are contained in able 5. <br />plant species were <br />rows per replication, <br />hectare and phosphorus <br />ceding was performed. The <br />Slooe Plots. These plots were censtruc*_ad in October 1977 on a <br />southeast-'acing slope of deep mine waste ~a_er~al ;Figure -? One <br />plot is graded on a 3:1 slope and the second is ;radee to 1.5:1. The <br />three treatments used are as follows: <br />