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    • Journal of Range Management, Volume 44 (1991)
    • Journal of Range Management, Volume 44, Number 3 (May 1991)
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    Monitoring roots of grazed rangeland vegetation with the root periscope/mini-rhizotron technique

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    Author
    Karl, M. G.
    Doescher, P. S.
    Issue Date
    1991-05-01
    Keywords
    field experimentation
    Dactylis glomerata
    methodology
    roots
    monitoring
    growth rate
    cattle
    defoliation
    grazing
    
    Metadata
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    Citation
    Karl, M. G., & Doescher, P. S. (1991). Monitoring roots of grazed rangeland vegetation with the root periscope/mini-rhizotron technique. Journal of Range Management, 44(3), 296-298.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644749
    DOI
    10.2307/4002962
    Additional Links
    https://rangelands.org/
    Abstract
    The root periscope/mini-rhizotron technique has been used most commonly to monitor root growth of field crops in a nondestructive manner. This study introduces a successful application of the technique for monitoring root growth of grazed rangeland vegetation. The relative, root growth response of orchardgrass (Dactylis glomerata L. 'Potomac') to defoliation by cattle was monitored on a conifer plantation in southwest Oregon. Despite stocking densities of about 2.7-4.4 animal unit/ha and 19 days of grazing during 1988, trampling and breakage of mini-rhizotrons on the cattle-grazed area was minimal. Defoliation by cattle had a negative impact on the relative number of roots for grazed orchardgrass in June and July (P < 0.05). Cautions and limitations for the use of the technique on rangelands are presented. The root periscope/mini-rhizotron appears to be a suitable, nondestructive, and affordable (1,000-1,200 per root periscope; 8.50 per mini-rhizotron) technique for monitoring root growth of rangeland vegetation defoliated by livestock and/or native ungulates.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002962
    Scopus Count
    Collections
    Journal of Range Management, Volume 44, Number 3 (May 1991)

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