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• <br />Figure 15. Aspen at Seneca IIW south planting site, left is June 2008, right is <br />October 2008. Note delayed senescence of aspen on landscape fabric. <br />Landscape fabric increased the amount of soil moisture available to the plants (Figures <br />16 -18), which in turn provided more favorable leaf water potential (Figure 19) and <br />subsequent increased photosynthesis and growth of aspen. Soil moisture was 29% <br />higher under the landscape fabric compared to no fabric. Photosynthesis and stomatal <br />conductance of aspen were related to landscape fabric and irrigation treatment (Figure <br />20). <br />• <br />22 <br />Figure 14. Aspen at Seneca lower Yoast planting site, Left is June 2008, right is <br />October 2008. Landscape fabric delayed aspen senescence and trees are still green in <br />October. <br />