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    • Journal of Range Management, Volume 40 (1987)
    • Journal of Range Management, Volume 40, Number 3 (May 1987)
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    Caryopsis Weight and Planting Depth of Blue Grama. II. Emergence in Marginal Soil Moisture

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    Author
    Carren, C. J.
    Wilson, A. M.
    Cuany, R. L.
    Issue Date
    1987-05-01
    Keywords
    depth of burial
    water deficit
    seedling emergence
    seed weight
    cultivars
    soil water content
    Bouteloua gracilis
    establishment
    Colorado
    
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    Citation
    Carren, C. J., Wilson, A. M., & Cuany, R. L. (1987). Caryopsis weight and planting depth of blue grama. II. Emergence in marginal soil moisture. Journal of Range Management, 40(3), 212-216.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/645288
    DOI
    10.2307/3899081
    Additional Links
    https://rangelands.org/
    Abstract
    Blue grama [Bouteloua gracilis (H.B.K.) Lag. ex Steud.] has not been able to establish itself, or to be successfully planted, from seed on abandoned croplands of the Central Plains. The objectives of this study were to test blue grama plant material under limited moisture and develop methods for improving emergence and establishment of blue grama seedlings. Experiments were conducted in the greenhouse and at the Central Plains Experimental Range near Nunn, Colorado, with 3 accessions. Under limited moisture conditions in the greenhouse, seedlings emerged better from planting depths of 2.0 and 2.5 cm than from depths of 0.5, 1.0 or 1.5 cm. Higher caryopsis weight was associated with a significant increase in percentage emergence at all planting depths. Accession PM-K-1483 had greatest emergence, followed by 'Hachita' and 'Lovington'. Under favorable soil moisture conditions in the field (2 cm of water applied at planting dates in June and July 1981), deep planting resulted in decreased emergence. Averaged over all planting depths, percentage emergence increased nearly 2-fold with an increase in caryopsis weight from 39 to 59 mg/100. When soil moisture conditions were marginal (only 1 cm water added), satisfactory emergence was obtained only when high-weight seeds were planted at a depth of 2 cm. Soil at a planting depth of 1 cm dried quickly and prevented emergence. Genetic improvement of caryopsis weight combined with planting at depths of about 2.0 cm should improve the emergence and establishment of blue grama seedlings.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3899081
    Scopus Count
    Collections
    Journal of Range Management, Volume 40, Number 3 (May 1987)

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