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    • Journal of Range Management, Volume 34 (1981)
    • Journal of Range Management, Volume 34, Number 5 (September 1984)
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    Tiller Length vs. Tiller Weight: Applications to Plant Growth Studies

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    Author
    Sharrow, S. H.
    Issue Date
    1981-09-01
    
    Metadata
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    Citation
    Sharrow, S. H. (1981). Tiller length vs. tiller weight: Applications to plant growth studies. Journal of Range Management, 34(5), 354-356.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/646273
    DOI
    10.2307/3897901
    Additional Links
    https://rangelands.org/
    Abstract
    The growth and development of individual grass tillers is frequently monitored in intensive studies of plant response to treatments or environmental parameters. Since growth may be recognized as an increase in tiller weight or tiller length over time, knowledge of the relationship between them is important if researchers are to select the measure most appropriate for their needs. To make these comparisons, the mean weight and length of tillers from perennial ryegrass (Lolium perenne L.), colonial bentgrass (Agrostis tenuis Sibth.), softchess (Bromus mollis L.), and annual fescue (Vulpia Spp.) were measured on each of seven dates during the spring growing period, 1977. Sample sizes required to estimate mean tiller length were calculated on each date using Stein's two-stage procedure. The relationship between mean tiller weight and mean tiller length over time was evaluated by least squares analysis of a linear regression model. Results of these analyses indicated that mean tiller length can be estimated satisfactorily from a substantially smaller sample size than can mean tiller weight. In addition, a strong linear relationship was observed between mean tiller weight and mean tiller length over time. The strength and linear nature of this relationship suggests that both measures will yield similar relative growth curves when sequential observations are plotted over time. Actual growth curves plotted for perennial ryegrass and colonial bentgrass support this supposition. Therefore, since tiller lengths require a small sample size to estimate each mean, both time and money can be saved by basing growth analysis on observations of tiller length rather than on tiller weight.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3897901
    Scopus Count
    Collections
    Journal of Range Management, Volume 34, Number 5 (September 1984)

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