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    Effects of form and concentration of nitrogen fertilizer on the salt tolerance of 'Tifway' bermudagrass

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    Author
    Moharram, Hisham Nagaty, 1961-
    Issue Date
    1991
    Keywords
    Agriculture, Agronomy.
    Biology, Plant Physiology.
    Advisor
    Mancino, Charles F.
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Many factors influence the salt tolerance of plants. This study investigated the effects of form and concentration of nitrogen fertilizer on the salt tolerance of 'Tifway' bermudagrass grown under four salinity levels in a nutrient solution. The design was a 4 x 2 x 2 factorial in an RCB design. The four salinity levels were 0 (1.6 to 3.6), 10, 22, and 42 dS m⁻¹. Nitrogen was applied in the NH₄⁺ and NO₃⁻ form and at 52.5 and 210.0 mg N L⁻¹ of nutrient solution. The results indicated that NH₄⁺ improved the salt tolerance of 'Tifway' bermudagrass in terms of aesthetic value (color and leaf firing), osmotic adjustment (free amino acid content), and tolerance of specific ion effects (Na, Ca, and the Na:K ratio). The 210.0 mg N L⁻¹ concentration improved the root:shoot ratio of 'Tifway' bermudagrass and reduced salt ion accumulation in shoots.
    Type
    text
    Thesis-Reproduction (electronic)
    Degree Name
    M.S.
    Degree Level
    masters
    Degree Program
    Graduate College
    Plant Sciences
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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