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    • Journal of Range Management, Volume 51 (1998)
    • Journal of Range Management, Volume 51, Number 1 (January 1998)
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    Harvest frequency and burning effects on vigor of native grasses

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    Author
    Cuomo, G. J.
    Anderson, B. E.
    Young, L. J.
    Issue Date
    1998-01-01
    Keywords
    Nebraska
    vigor
    Sorghastrum nutans
    Panicum virgatum
    weight
    harvesting frequency
    species differences
    prescribed burning
    Andropogon gerardii
    tillering
    tillers
    plant density
    biomass
    forage
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    Citation
    Cuomo, G. J., Anderson, B. E., & Young, L. J. (1998). Harvest frequency and burning effects on vigor of native grasses. Journal of Range Management, 51(1), 32-36.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644114
    DOI
    10.2307/4003560
    Additional Links
    https://rangelands.org/
    Abstract
    Burning and harvest frequency can affect the vigor of switchgrass (Panicum virgatum L.), big bluestem (Andropogon gerardii Vitman), and indiangrass [Sorghastrum nutans (L.) Nash]. A field study was established in 1986 and from 1988 to 1991 treatments were applied with burning in March, April, or May with unburned controls. Forage was harvested from plots 1 (June), 2 (June and July), or 3 (June, July, and August) times with unharvested control plots included. Treatments were applied to the same plots annually and were arranged in a split-split plot, randomized complete block design. The main plot was species, the subplot was burning, and the sub-subplot was harvest frequency. Big bluestem produced 147 and 122% more etiolated biomass in spring than did switchgrass or indiangrass, respectively. Effects of harvest management on plant vigor occurred after 1 growing-season, but changed little during the remainder of the study. Etiolated biomass declined more as harvest frequency increased from 2 to 3 harvests than from 1 to 2 harvests (213, 205, and 162 g m-2 for 1, 2, and 3 harvests per summer, respectively). Big bluestem produced 95 and 33 % more tillers than switchgrass and indiangrass, respectively, and burning stimulated tillering an average of 32% across all species and harvest treatments. Harvest frequency increased tiller density. However, plant vigor as measured by etiolated growth decreased as harvest frequency increased. This suggests that with these species tillering may occur at the expense of energy storage with frequent defoliation. Vigorous spring etiolated growth and high tillering potential may partially explain the dominance of big bluestem in the tallgrass prairie.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4003560
    Scopus Count
    Collections
    Journal of Range Management, Volume 51, Number 1 (January 1998)

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