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  • 1
    Book
    Book
    2008
    ISBN: 9780691131504  ISBN: 0691131503  ISBN: 0691138575  ISBN: 9780691138572  ISBN: 1400830419  ISBN: 9781400830411 
    Language: English
    Description: This short, practical book introduces students to the important components of the information-seeking process. Unlike guides that describe the research process but do not explain its logic, this book focuses entirely on basic concepts, strategies, tools, and tactics for research--in both electronic and print formats. --from publisher description.
    Subject(s): Bibliothek ; EDUCATION ; LANGUAGE ARTS & DISCIPLINES ; Library & Information Science ; Library research ; Library Science ; Library Skills ; Teaching Methods & Materials ; United States ; USA ; Wissenschaftliches Arbeiten
    ISBN: 9780691131504
    ISBN: 0691131503
    ISBN: 0691138575
    ISBN: 9780691138572
    ISBN: 1400830419
    ISBN: 9781400830411
    Source: De Gruyter eBooks
    Source: ProQuest Central
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  • 2
    Article
    Article
    2004
    ISSN: 1522-8339  ISSN: 1548-4785 
    Language: English
    In: Native plants journal, 2004-04-01, Vol.5 (1), p.75-80
    Description: Lewisia cotyledon (S. Wats.) B.L. Robins. (Portulacaceae), a perennial native to the mountainous areas of the western US, was micropropagated using the lower axillary buds from flower peduncles. Successful establishment in tissue culture was genotype dependent. Driver Kuniyuki Walnut medium (DKW) supplemented with 3.5 μM 6-benzylaminopurine (BA) appeared to be a better basal medium for increasing and maintaining in vitro rosettes than either Murashige and Skoog medium (MS) or Woody Plant medium (WPM) supplemented with the same BA concentration, but this response was genotype dependent. Placing rosettes on MS medium supplemented with 9.8 μM indole-3-butyric acid (IBA) for 12 wk resulted in 100% rooting with an average of 16 roots per rosette. Rooted rosettes were successfully transferred to ex vitro culture and were phenotypically normal. Micropropagation of lewisia will enable growers to produce large numbers of plants rapidly for the home landscape.
    Subject(s): Cotyledons ; Flower buds ; Flowers ; Genotypes ; Lewisia ; Micropropagation ; Peduncle ; Plant growth regulators ; Plant roots ; Plants ; Rooting ; West (U.S.)
    ISSN: 1522-8339
    ISSN: 1548-4785
    E-ISSN: 1548-4785
    Source: HighWire Press (Free Journals)
    Source: Project MUSE - Premium Collection
    Source: Academic Search Ultimate
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  • 3
    Language: English
    Source: HathiTrust Digital Library Full View Worldwide
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  • 4
    Language: English
    In: HortScience, 2005-07-01, Vol.40 (4), p.1050-1050
    Description: Seedlings of several conifer species can be difficult to transplant, with the problem often related to poor root regeneration. The objective of this study was to determine if corkbark fir (Abies lasiocarpa arizonica) seedlings or pinyon pine (Pinus edulis) seedlings would produce more root growth when grown in a Missouri gravel bed growing system compared to field soil. The 3–0 fir seedlings and 4–0 pine seedlings were planted in a gravel bed in mid-April. The gravel bed was 3 m × 3.7 m and was filled with a mixture of 60% pea gravel (1 cm minus), 30% Turface®, and 10% silica sand (by volume). A field bed 3 m × 3.7 m in size was also prepared. Fir seedlings were harvested in September and October, but pinyon pine seedlings were harvested only in October due to their poor transplant survival. Plant heights, stem diameters, and root volumes, as well as root and shoot dry weights, were determined at harvest. Of all the measured growth parameters for both species, only root dry weights and root volumes were significantly different. In particular, fir seedlings grown in the gravel bed produced at least 30% more root dry weight and 74% more root volume than those planted in field soil whether plants were harvested in September or October. Likewise, pine seedlings grown in gravel produced at least 37% more root dry weight and 86% more root volume than those grown in soil. In addition, only 10.6% of the pine seedlings planted in soil survived transplanting, but 23.3% of those grown in the gravel bed survived. This study demonstrated that corkbark fir and pinyon pine seedlings grown in a gravel bed produced larger root systems than those planted into field soil, and the gravel bed also improved pinyon pine seedling survival after transplanting.
    ISSN: 0018-5345
    E-ISSN: 2327-9834
    Source: DOAJ Directory of Open Access Journals - Not for CDI Discovery
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  • 5
    Language: English
    In: HortScience, 2007-12-01, Vol.42 (7), p.1705-1709
    Description: Holding practices for balled and burlapped conifers may inadvertently impact nutrient availability and tree growth. The objective of this study was to examine the effectiveness of several nutrient treatments to maintain or enhance the growth and foliar nutrition of Colorado spruce (Picea pungens Engelm.) trees while they were in a mulch-holding bed. Sixty 1.5 to 1.8-m tall Colorado spruce trees with 61-cm (24 inch) diameter root balls were heeled into a holding bed of fresh pine bark mulch during 2002 and 2003. The treatments applied to the root balls were a control (pine bark without fertilizer), 114.2 g Osmocote (Scotts, Marysville, OH) 15N–3.9P–10K distributed over the top of the ball, one Ross Gro-Stake (Easy Gardener, Waco, TX) 10N–4.3P–8.3K Evergreen fertilizer spike (113 g) per ball, one-half cartridge (≈8.5 g) of Ross Root Feeder (Weatherly Consumer Products, Lexington, KY) 10N–5.2P–10K evergreen fertilizer injected into the root ball at four points, or a 1:1 biosolids-based compost:pine bark mixture (by volume). Trunk diameters and tree heights were measured and foliar samples for nutrient analyses were collected before applying these treatments and at the end of the growing season 20 or 17 weeks later. The 2003 trees were transplanted to a landscape site in 2004, and the height growth of their terminal leaders were measured at the end of the next two growing seasons. Overall, Colorado spruce trees appeared normal while they were held in the mulch beds the first season after nursery harvest. Changes in tree height and trunk diameter by the end of the first season after harvest were unaffected by the nutrient treatments. By fall of both years, needles from trees treated with the mixture of 1:1 compost:bark had the highest levels of foliar N, Mg, Ca, S, and B. Trees treated with the fertilizer spike in 2002 had similar levels of N and S in their needles compared with compost:bark-treated trees, whereas in 2003, spike-treated trees had the second highest levels of foliar N and S, and these levels were significantly higher than those of trees receiving the control or other fertilizer treatments with the exception of N in needles from fertilizer-injected trees in 2002. Plant-available N, however, was highest in the root balls of Osmocote- and fertilizer spike-treated trees only in 2003. Leaders on the 2003 trees that received the compost:bark or fertilizer spike treatments grew at least 70% or 36% taller, respectively, than those trees receiving the other treatments by the end of the second growing season in a managed landscape. Although all nutrient treatments failed to promote increases in tree heights and trunk diameters while the trees were held in a mulch bed for the first growing season after digging, the compost:bark mixture and, to some extent, the fertilizer spike improved foliar nutrition during this time.
    Subject(s): Agronomy. Soil science and plant productions ; Biological and medical sciences ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; Generalities. Analysis and diagnosis methods ; Soil-plant relationships. Soil fertility. Fertilization. Amendments
    ISSN: 0018-5345
    E-ISSN: 2327-9834
    Source: DOAJ Directory of Open Access Journals - Not for CDI Discovery
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  • 6
    Book chapter
    Book chapter
    2019
    Language: English
    In: The Elements of Library Research, 2019, p.149-160
    Source: De Gruyter eBooks
    Source: ProQuest Central
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  • 7
    Book chapter
    Book chapter
    2019
    Language: English
    In: The Elements of Library Research, 2019, p.191-194
    Source: De Gruyter eBooks
    Source: ProQuest Central
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  • 8
    Book chapter
    Book chapter
    2019
    Language: English
    In: The Elements of Library Research, 2019, p.147-148
    Source: De Gruyter eBooks
    Source: ProQuest Central
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  • 9
    Book chapter
    Book chapter
    2019
    Language: English
    In: The Elements of Library Research, 2019, p.64-89
    Source: De Gruyter eBooks
    Source: ProQuest Central
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  • 10
    Book chapter
    Book chapter
    2019
    Language: English
    In: The Elements of Library Research, 2019, p.161-162
    Source: De Gruyter eBooks
    Source: ProQuest Central
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