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<br />CANON CITY DOLOMITE QUARRY <br />M.. t 4....1~ <br />Two study plots were established on a level waste dump designed to <br />simulate conditions following mining (Figure 5). <br />Main Plot <br />The plot arrangement is a randomized block design with three replications <br />of seven treatments. The subplots each measure 3.7x7.5 m. All treatments, <br />with the exception of the Control, received a uniform application of <br />220 kg PZOs/ha as triple phosphate and 66 kg K20/ha as muriate of potash <br />(surface applied and worked into the waste material by rototilling). Nitrogen <br />additions (as ammonium nitrate) in Treatments 3-7 were added in split <br />applications: one-half was added in December of 1976 and the remainder in <br />June of 1977. Manure was applied in October of 1976. The following seven <br />treatments were established. <br />Treatment <br />Treatment <br />Treatment <br />Treatment <br />Treatment <br />Treatment <br />Treatment <br /> <br />1: <br />2: <br />3: <br />4: <br />6: <br />6: <br />7: <br />Con <br />220 <br />220 <br />220 <br />220 <br />220 <br />220 <br />:rol (no fer <br />kg PZOs/ha, <br />kg PZOs/ha, <br />kg PZOs/ha, <br />kg PZOs/ha, <br />kg P20s/ha, <br />kg PZOs/ha, <br />til <br />66 <br />66 <br />66 <br />66 <br />66 <br />66 <br />i zei <br />kg <br />kg <br />kg <br />kg <br />kg <br />kg <br />no mulch) <br />K20/ha <br />K20/ ha , 66 <br />K20/ha, 132 <br />K20/ha, 66 <br />KZO/ha, 132 <br />KZO/ha, 66 <br />kg <br />kg <br />kg <br />kg <br />kg <br />N/ha <br />N/ha <br />N/ha + excelsior mulch <br />N/ha + excelsior mulch <br />N/ha + 110 h1T manure/ha <br />23 <br />