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    • Journal of Range Management, Volume 36 (1983)
    • Journal of Range Management, Volume 36, Number 1 (January 1983)
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    Cytokinins Effect on Protein and Chlorophyll Content of Big Bluestem Leaves

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    Author
    Towne, G.
    Owensby, C.
    Issue Date
    1983-01-01
    Keywords
    Andropogon gerardii
    forage quality
    
    Metadata
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    Citation
    Towne, G., & Owensby, C. (1983). Cytokinins effect on protein and chlorophyll content of big bluestem leaves. Journal of Range Management, 36(1), 75-77.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/645988
    DOI
    10.2307/3897987
    Additional Links
    https://rangelands.org/
    Abstract
    Four concentrations of the synthetic cytokinin benzyladenine (BA) were applied to ungrazed tallgrass prairie near Manhattan, Kans., in 1979 on 4 biweekly dates beginning in mid-June. Changes in chlorophyll and crude protein content of big bluestem (Andropogon gerardi Vitman) leaves from the different treatments were monitored weekly from August until early October. BA did not significantly delay chlorophyll breakdown in big bluestem, but leaves sprayed with 5 ppm BA contained higher mean chlorophyll contents throughout the sampling period than leaves from other treatments. Big bluestem receiving 5, 20, and 40 ppm BA applied in July had significantly more crude protein than untreated leaves, but 10 ppm BA had no effect on leaf protein content. Applying BA in mid-June was ineffective in maintaining high crude protein levels, regardless of concentration. BA did not alter protein or total nonstructural carbohydrate content in big bluestem rhizomes, indicating that it had no deleterious effect on internal nutrient reserve cycles. Applying 5 ppm BA in either mid- or late-July significantly increased herbage yields the next year in comparison with yields of untreated plots.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3897987
    Scopus Count
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    Journal of Range Management, Volume 36, Number 1 (January 1983)

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