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    • Journal of Range Management, Volume 46 (1993)
    • Journal of Range Management, Volume 46, Number 3 (May 1993)
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    Forage response to N, P, and S fertilization on clearcut lodgepole pine sites

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    Author
    Wikeem, B. M.
    Newman, R. F.
    Va, A. L.
    Issue Date
    1993-05-01
    Keywords
    phosphorus fertilizers
    sulfur fertilizers
    crop quality
    grassland improvement
    British Columbia
    site factors
    protein content
    Calamagrostis rubescens
    Pinus contorta
    fiber content
    nitrogen fertilizers
    crude protein
    nitrogen content
    application rates
    crop yield
    nutritive value
    pasture plants
    grasses
    forage
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    Citation
    Wikeem, B. M., Newman, R. F., & Va, A. L. (1993). Forage response to N, P, and S fertilization on clearcut lodgepole pine sites. Journal of Range Management, 46(3), 262-270.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644563
    DOI
    10.2307/4002619
    Additional Links
    https://rangelands.org/
    Abstract
    The response of selected plant species to a single application of factorial combinations of nitrogen (N), phosphorus (P), and sulfur (S) on 2 lodgepole pine (Pinus contorta Dougl.) clearcut-logged sites in British Columbia was evaluated over 3 years. Increasing N rates typically resulted in higher forage standing crop on both sites, in all years. but standing crop at Fly Creek was nearly double that at Beaverdam Lake. On both sites, forage yields peaked at 400 kg N/ha in 1982 and carry-over of the fertilizer effect lasted for 3 years although yields declined annually. Addition of P to N applications enhanced (P < 0.05) total standing crop, other grass standing crop, and pinegrass (Calamagrostis rubescens Buckl.) standing crop at Beaverdam Lake and grass standing crop at Fly Creek, but had no effect (P > 0.05) on other species and groups. Sulfur, added to N applications, enhanced total yields compared to control on both clearcuts although at Fly Creek this response nearly doubled that produced at Beaverdam Lake. Nitrogen fertilization increased (P < 0.05) pinegrass crude protein (CP) content, particularly in the first year after fertilization. Acid detergent fiber (ADF) generally increased in response to increasing N levels in 1982, but declined compared to control in 1983 and 1984. Elevated forage CP levels, litter N concentrations, and soil N levels in 1984 indicated that the carry-over response on these forest sites resulted directly from N remaining in the soil or again becoming available for plant growth.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002619
    Scopus Count
    Collections
    Journal of Range Management, Volume 46, Number 3 (May 1993)

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