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Improving sustainable seed yield in Wyoming big sagebrushAuthor(s): Jeremiah C. Armstrong
Source: Provo, UT: Brigham Young University. 29 p. Thesis.
Publication Series: Miscellaneous Publication
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DescriptionAs part of the Great Basin Restoration Initiative, the effects of browsing, competition removal, pruning, fertilization and seed collection methods on increasing seed production in Wyoming big sagebrush (Artemisia tridentata Nutt. spp wyomingensis Beetle & Young) were studied. Study sites were located in Idaho, Nevada, and Utah. A split-plot design with a complete factorial arrangement was implemented to determine the effects of the treatments. Removal of competition from Wyoming big sagebrush shrubs increased seed production significantly (P < 0.05) at both the regional and site levels, and yielded 300% more seed per m2 (26.8 g/m2) than shrubs without competition removal (8.5 g/m2). Fertilization was significant (P < 0.05) at the regional level, and yielded 140 % more seed per m2 (21.1 g/m2) than the unfertilized shrubs (14.2 g/m2). Sites in different states varied in results, but the removal of competing vegetation stood out as the best method for increasing seed yield. Method of collection did not affect seed yield.
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CitationArmstrong, Jeremiah C. 2007. Improving sustainable seed yield in Wyoming big sagebrush. Provo, UT: Brigham Young University. 29 p. Thesis.
Keywordsseed yield, Wyoming big sagebrush, Artemisia tridentata Nutt. spp wyomingensis, Great Basin Restoration Initiative, split-plot design
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