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throughout the sampling period. Comparison between mulches <br />• shows that the excelsior treatment is cooler than the straw <br /> treatment throughout most of the sampling period at 5cm. This <br /> tread is reversed at 15 and ZS® with the straw treatment <br />'- cooler than the eacelsior treatment. The greatest differences <br /> at these depths were from July 15 to October 13 and Juae 2 to <br />~- October 1 respectively. At 50~, there are only slight dif- <br /> fereaces. The excelsior treatment was slightly warmer through <br /> spring and summer. <br /> c. 2:1 Slope - North (Appendix C-7 through C-9) <br /> Only slight differences were apparent at 5 ® when mulch <br /> treatments were compared with the control. The differences <br /> are so slight that a significant mulch benefit is question- <br /> able. At 15cm, temperatures of the hydromulch (5 and 15cm <br /> hydromulch Lemperatures approximate each other throughout the <br />_. sampling period) consistently exceed those of the control. In <br /> contrast, the excelsior treatment is cooler than the control <br /> in late spring and early fall. There is little difference <br />~ <br />• between the control and mulch treatments at ZS® except that <br />' the excelsior treatment is somewhat warmer through the summer. <br />' At 50® the hydromulch treatment is warmer than the control <br /> from 30 June to the end of the sampling period. No sigaifi- <br />~ cant temperature differences were noted at this depth between <br />' the control and excelsior treatments. The 15, 25, and 50cm <br /> temperatures of the control and excelsior treatments became <br /> clustered through the fall indicating uniform temperatures at <br /> <br /> lover depths. This was not apparent for the hydromulch treat- <br />. meat. The 5 and 15 ® depths remained above the 25 and 50® <br />-' depths until late fall. Comparison between mulches shows <br /> little difference at 5 ® except that the excelsior treatment <br />- appears to be mare sensitive to air temperature fluctuations <br /> which is anomalous. At 15 em, the hydromulch treatment is <br /> consistently warmer than excelsior. At 25cm, there are only <br /> slight differences in treatments except that the excelsior <br /> treatment is aoticably warmer than the hydromulch treatment <br /> during the su®ner. At 50® the hydromulch treatment is <br /> 19 <br />