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<br />38 <br />as a relatively high concentration of heavy metals and potential disease <br />problems, but given only one application to the site and with proper manage- <br />ment techniques, this method holds great promise for use at the Canon City <br />Quarry. <br />Species Evaluation Plot <br />These plots tell us very little as they represent the same species <br />planted on the Main Plot but without competition with other species. About <br />all one might conclude is that those species growing well in the Evaluation <br />Plot that didn't do well in the Main Plot are at least adapted to climatic and <br />edaphic conditions of the site and might warrant a second consideration in <br />future seeding operations. <br />Trends <br />Mulching and fertilizer amendments including nitrogen have, with few <br />exceptions, demonstrated the best plant growth over the past four growing <br />seasons. While statistics may not prove the need for nitrogen and mulching, <br />a general trend has formed which shows these treatments to do best under a <br />variable climatic scheme as demonstrated by the U.S. Weather Bureau station <br />at Canon City. Data shows the summer of 1980 as dry (9.75 cm below average <br />from June to August, preceeded by a very wet spring with almost 12 cm of <br />excess moisture), the 1977 and 1979 seasons to have been average, and in 1978 <br />the site received approximately 6.5 cm more precipitation than normally <br />experienced (Table 1). On a site where climatic variability is the rule, <br />those treatments demonstrating goad consistency become very desirable from a <br />reclamation standpoint. <br />