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    • Journal of Range Management, Volume 44 (1991)
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    Water relations and transpiration of honey mesquite on 2 sites in west Texas

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    Author
    Wan, C.
    Sosebee, R. E.
    Issue Date
    1991-03-01
    Keywords
    leaf angle
    facultative phreatophytes
    stress response
    matric potential
    clay loam soils
    leaves
    waxes
    Prosopis glandulosa
    phreatophytes
    drought tolerance
    leaf conductance
    sandy loam soils
    soil water content
    xylem water potential
    Texas
    temperature
    drought
    canopy
    water stress
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    Citation
    Wan, C., & Sosebee, R. E. (1991). Water relations and transpiration of honey mesquite on 2 sites in west Texas. Journal of Range Management, 44(2), 156-160.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644966
    DOI
    10.2307/4002315
    Additional Links
    https://rangelands.org/
    Abstract
    Transpiration rates and internal water relationships of honey mesquite (Prosopis glandulosa) were investigated weekly during May through September 1986 on sandy loam and clay loam, both upland sites in west Texas. Average transpiration rates peaked at approximately 7 mmol m-2 s-1 at 1100 hr during wet periods and reached a plateau between 4 and 5 mmol m-2 s-1 between 1200 and 1400 hr. During dry periods, the average transpiration rates reached their maximum plateau of 2 mmol m-2 s-1 at 1000 hr and declined between 1200 and 1600 hr. The transpiration rates ranged from an average of 3.28 +/- 2.05 mmol m-2 s-1 for trees on a sandy loam site to an average of 3.85 +/- 1.94 mmol m-2 s-1 for those on a clay loam site. Stomatal closure in midsummer caused a substantial increase in leaf temperature. Mesquite has developed other means, such as leaf orientation, wax accumulation, and reduction in canopy development, to avoid drought. Stomatal conductance of mesquite is very responsive to soil water availability and dryness of the air, and is less responsive to internal water status. This research further substantiates that mesquite behaves like a facultative phreatophyte in west Texas.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002315
    Scopus Count
    Collections
    Journal of Range Management, Volume 44, Number 2 (March 1991)

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