Production System Factors Affecting Rooting and Subsequent Performance of Northern Red Oak (Quercus rubra L.) Cuttings for Outplanting

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dc.contributor.advisor Dr. Daniel Robison, Committee Chair en_US
dc.contributor.advisor Dr. Barry Goldfarb, Committee Member en_US
dc.contributor.advisor Dr. Doug Frederick, Committee Member en_US
dc.contributor.advisor Dr. Tom Wentworth, Committee Member en_US Dreps, Heather Blake en_US 2010-04-02T18:05:41Z 2010-04-02T18:05:41Z 2007-04-24 en_US
dc.identifier.other etd-03062007-110710 en_US
dc.description.abstract Northern red oak (NRO), Quercus rubra L., is a valuable tree species for timber, wildlife, restoration, and urban forestry. Seed production and growth responses from different maternal sources can be widely variable. Rooting choice stem cuttings of NRO could prove to be a time-saving nursery practice, yielding prime candidates for outplanting. This study sought to develop effective protocols to root NRO stem cuttings at high frequencies and to examine the effects of several factors during rooting and subsequent containerized growth. Supplemental light and heat were administered to determine the effects of artificially extending the growing season of successfully rooted cuttings. Different container sizes were used to determine which size encouraged optimum containerized growth and survival. In addition, shoot production enhancement was studied through pruning of field grown stock seedlings so that stem cutting material could be readily available throughout the growing season; different seedling sources were used to examine provenance variability for shoot production. Also, early (ES) and late season (LS) cuttings were taken to determine the viability of rooting at different times during the growing season. After two seasons of containerized growth, final measurements of NRO rooted cuttings were recorded to determine efficacy of prior treatments. Geographic source and prune height treatments were both found to have significant impact on the number of new shoots generated by NRO stock plants. We found large stem caliper may enhance donor plant ability to generate new shoots for rooting as compared to small stem caliper. Geographic source and prune height treatment significantly affected rooting ability of ES cuttings, which rooted at 64% overall. Rooting percentages were lower for LS stem cuttings (53% overall), but showed the possibility of LS rooting for nursery operations; prune height alone was statistically significant for rooting ability of LS cuttings. During the first growing season, both growing environment and container size were significant in encouraging shoot growth post-rooting. After the first growing season and subsequent overwintering, survival rates of rooted cuttings were 75% overall. In this study, the smallest container size used during the first growing season was the most beneficial to rooted cutting growth based on final attribute measurements of height, root collar diameter (RCD), root mass, shoot mass, and root-to-shoot ratio, all of which have been proposed to be good indicators of field performance. Extending the growing season immediately after rooting significantly affected RCD and root mass measurements as well. en_US
dc.rights I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dis sertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. en_US
dc.subject rooting en_US
dc.subject late season en_US
dc.subject provenance en_US
dc.subject early season en_US
dc.subject pruning height en_US
dc.subject stem cutting en_US
dc.subject container size en_US
dc.subject oak en_US
dc.subject asexual propagation en_US
dc.subject rooted cutting en_US
dc.subject red oak en_US
dc.subject photoperiod en_US
dc.title Production System Factors Affecting Rooting and Subsequent Performance of Northern Red Oak (Quercus rubra L.) Cuttings for Outplanting en_US MS en_US thesis en_US Forestry en_US

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