Laserfiche WebLink
<br />\ The surface (5 em) of the hydromulch plot heats up more rapidly <br />than does the surface of the excelsior plot. The hydromuleh plot <br />surface also cools more rapidly as indicated by sharper peaks and <br />depressions in the H curve. The high temperatures for the surface of <br />the tvo treatments were 107°F and 100°F for hydromulch and excelsior <br />respectively. The variability of the hydromuleh readings coupled with <br />the gentler temperature curve of the excelsior treatment indicates that <br />ezcelsior has a greater insulating and temperature-moderating effect <br />on the surface of the west-cad plots. <br />At the 15 cm depth the H treatment is slightly warmer thaw the <br />excelsior tzeatmeat throughout the spring and sv~er. By early fall <br />'- and until the cad of the sampling period the temperatures are essentially <br />equal. Maximum temperatures on July 26 were 86°F and 88°F for the <br />excelsior and hydromuleh treatments respectively, At 25 cm temperature <br />~ readings are nearly identical for H and E until August 23. From this <br />dale until the cad of the sampling period the E treatment becomes <br />~ warmer by 2 or 30. At 50 em, the temperature readings are relatively <br />` identical thrwghout the sampling period. <br />LBEMR(R) vs. LBEMT(T) - Comparison of refuse-ewered plot (R) <br />and topsoiled plot (T) under excelsior mulch <br />The shapes of the curves for all depths approximate each other <br />indicating ao dramatic differences between the refuse and topsoiled treat- <br />meats. Peak temperatures were recorded on July 26 for the majority of <br />the curves with the exceptions of T-25 cm and R-50 cm on July 28 and <br />~,. August 9 respectively. The T-25 ® high vas considered a valid reading <br />but the cause is unresolved. The R-50 em reading, which is a signifi- <br />cant deviation from what would be expected, is considered a sampling <br />error. <br />24 <br />