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    • Rangeland Ecology & Management, Volume 58, Number 3 (May 2005)
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    Fourwing Saltbush Seed Yield and Quality: Irrigation, Fertilization, and Ecotype Effects

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    Author
    Petersen, Joseph L.
    Ueckert, Darrell N.
    Issue Date
    2005-05-01
    Keywords
    Atriplex canescens
    germination
    mortality
    seed production
    seed weight
    utricle fill
    
    Metadata
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    Citation
    Petersen, J. L., & Ueckert, D. N. (2005). Fourwing saltbush seed yield and quality: irrigation, fertilization, and ecotype effects. Rangeland Ecology & Management, 58(3), 299-307.
    Publisher
    Society for Range Management
    Journal
    Rangeland Ecology & Management
    URI
    http://hdl.handle.net/10150/643267
    DOI
    10.2111/1551-5028(2005)58[299:FSSYAQ]2.0.CO;2
    Additional Links
    https://rangelands.org/
    Abstract
    Clones of superior pollen- and seed-producing plants of 4 fourwing saltbush (Atriplex canescens [Pursh] Nutt.) ecotypes were planted in a seed orchard in west-central Texas to determine if seed production and quality could be enhanced by irrigation and fertilization. Subplots of nitrogen (N) at 112 kg ha-1, phosphorous (P) at 112 kg ha-1, N + P at 112 + 112 kg ha-1, or no fertilizer were superimposed on irrigated or dryland main-plots. Neither irrigation nor fertilization affected estimated seed yields or utricle fill during the third growing season after planting. Fertilization did not affect seed germination of any of the saltbush ecotypes on irrigated plots or that of the 2 more xeric ecotypes (Grandfalls and Valentine) on dryland plots. Fertilizer N on dryland plots increased germination of the San Angelo ecotype, and N + P increased germination of the Texon ecotype. Estimated gross value of the first seed crop was about 4648~ha-1 even though the superior reproductive traits of parental pistillate plants were poorly expressed by the clones. Fertilization did not affect estimated seed yields in irrigated plots, but N and N + P increased seed yields in dryland plots in the fourth growing season. Fertilization effects on seed weights varied among irrigated and dryland plots and among saltbush ecotypes. Mortality of the shrubs during the period extending from 1988 to 1990 was not affected by irrigation or fertilization but increased among ecotypes as the xeric nature of their sites of origin increased and as the distance of their sites of origin from the seed orchard increased. Evidence from this study did not strongly support cloning, irrigation, or fertilization for improving seed harvests of fourwing saltbush in west-central Texas.  
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2111/1551-5028(2005)58[299:FSSYAQ]2.0.CO;2
    Scopus Count
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    Rangeland Ecology & Management, Volume 58, Number 3 (May 2005)

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