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_. <br />oa the Y-axis and sampling dates oa the %-axis. The resultant curves <br />• <br />(see Appendix D1-10) are the basis for the following discussion. <br />3.1.2.1 General Comparisons. The overall shape of the curves <br />are as expected for all plots. Lover temperatures were recorded for <br />all soil depths in the early spring and late fall. The highest temper- <br />atuzes recorded occurred is mid- to late summer. At 5 em and 15 cm <br />- depths the high temperatures were recorded on July 26 with one exception. <br />The high temperatures recorded for the 25 ® and 50 ® depths usually <br />occurred oa August 9. Where this was not true, the high temperatures <br />occurred oa July 26 but the difference between July 26 and August 9 <br />temperatures was slight. By October 28, the end of the sampling period, <br />curves for all plots over all depths vere.geaerally converging. The <br />temperature at the 50 em depth on many curves was as warm or warmer <br />than the 5 cm depth. <br />Surface temperatures (5 cm) varied a great deal through time for <br />all plots as air temperatures and solar radiation levels fluctuated. <br />This condition is somewhat less noticeable for the 15 cm depth but does <br />L ezist for many plots. Curves at the 25 cm depth shov slight undulations <br />` while 50 ® curves are generally the smoothest of all indicating the <br />expected damping of temperature fluctuations with increasing depth. <br />3.1.2.2 Specific Comparisons. <br />ZBH%w vs. 2BE%W - Comparison of hydromulch (H) and excelsior (E) <br />applications oa a vest-facing slope <br />Ia general, the shape of the curves are as expected. Lowest <br />temperatures occurred in early spring and fall and the highest temper- <br />atures is mid-summer. Individual depth curves, with the exception of <br />as E-25 cm anomaly (August 9), show highest temperatures an July 26. <br />This was common for most readings on other plots. <br />23 <br />