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. at this site had some form of injury. Yet, growth and survival of these trees was good <br />(Figures 3B - 7B), suggesting that the undisturbed soil presence of an extensive <br />parent root system is ideal for growth of aspen. Nevertheless, fencing of these trees <br />is recommended to produce an adequate stand of mature aspen. <br />Conclusions: <br />1. Growth and survival did not appear to be related to irrigation treatment, <br />likely a consequence of the high rainfall during the 2005 growing season. <br />2. Best growth appeared to be on natural root segment sprouts on fresh soil. <br />4. Transplanted sprouts, regardless of irrigation treatment in this relatively wet <br />year, showed considerable transplant injury. Growth and survival was relatively low <br />and diseases were higher in transplant cutting plots. <br />5. Potted aspen from nursery stock planted on stored soil grew well. <br />6. Fencing is necessary to protect small aspen trees from browsing injury. <br />• Application of research results: This study was designed to provide information to <br />compare survival, growth, and water status of irrigated aspen saplings at this one <br />site. The study also compared survival, growth, and water status of transplanted <br />sprouts with planted potted nursery-grown stock and with natural sprouts. The study <br />findings should be useful to provide information for the design of future replicated <br />experiments for determining specifics of irrigation treatment required for survival of <br />aspen sprouts. The study also found that potted nursery-grown stock did well on <br />fenced stored soil. <br />Proposed future research: <br />Growth of transplanted sprouts in second vear: Some of the transplanted aspen in <br />the irrigation plots died after the first year. It is expected that some of these will grow <br />back from root sprouts. We will examine the survival and re-growth of these trees <br />that died back from injury or disease the first year. Monitoring of injury and diseases <br />should continue for at least another season to determinerf mortality increases as a <br />result of these factors, or if re-sprouting from roots occurs when above-ground stems <br />