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Medientyp:
E-Artikel
Titel:
Nitrogen Increases Fresh Weight and Retail Value of Fraser Fir Christmas Trees
Beteiligte:
Hinesley, L. Eric;
Snelling, Layne K.;
Campbell, C. Ray;
Roten, D.K.;
Hartzog, Jeff
Erschienen:
American Society for Horticultural Science, 2000
Erschienen in:HortScience
Sprache:
Nicht zu entscheiden
DOI:
10.21273/hortsci.35.5.860
ISSN:
0018-5345;
2327-9834
Entstehung:
Anmerkungen:
Beschreibung:
<jats:p><jats:italic>Abies fraseri</jats:italic> (Pursh) Poir. Christmas trees were fertilized for 5 years with four levels of N (0, 56, 113, or 170 kg·ha<jats:sup>–1</jats:sup> per year) in spring, fall, or equally split between spring and fall. Nitrogen did not affect leader length, number of leaders, or bud frequency on the upper (distal) portion of the leader. Nitrogen increased bud frequency on the lower (proximal) 20 cm of the leader in only 1 of 3 years of measurement. All application schedules increased the number of apical buds on branches, whereas the number of lateral buds was increased only by spring applications. Nitrogen increased tree fresh weight and retail value as well as weight, length, and surface area of needles. Foliar N concentrations in the fall varied with fertilization schedule, and were higher in November than in October.</jats:p>