Full TGIF Record # 27716
Item 1 of 1
Publication Type:
i
Refereed
Author(s):Devitt, D. A.; Bowman, D. C.; Schulte, P. J.
Author Affiliation:Department of Range, Wildlife and Forestry, University of Nevada Reno; Department of Biochemistry, University of Nevada Reno, NV; Department of Biological Sciences, University of Nevada Las Vegas, NV
Title:Response of Cynodon dactylon to prolonged water deficits under saline conditions
Source:Plant and Soil. Vol. 148, No. 2, January 1993, p. 239-251.
# of Pages:13
Publishing Information:Dordrecht, Netherland: Martinus Nijhoff Publishers
Related Web URL:http://link.springer.com/article/10.1007/BF00012861
    Last checked: 10/14/2015
    Notes: Abstract only
Keywords:TIC Keywords: Cynodon; Cynodon dactylon; Salinity; Water; Irrigation; Stomatal conductance; Evapotranspiration
Abstract/Contents:"Competition for available water resources in both arid and semi-arid locations has led to greater scrutiny of turfgrass irrigation. Irrigation management strategies, including deficit irrigation, need further investigation. The objective of this research was to determine the physiological response of bermudagrass (Cynodon dactylon (L.) Pers.) to prolonged water deficits under saline conditions. Bermudagrass was grown in large columns packed with three different soil types (sandy loam, silt loam and clay). Synthesized saline irrigation water was applied at three different salinity levels (1.5, 3.0 and 6.0 dS/m). Two previous experiments that were conducted with these columns over a 3.5 year period led to differential profile salinization in all 27 columns. At the end of this 3.5 year period, all irrigations were terminated and plant growth and water status were monitored over a 95 day dry-down period. Midday stomatal conductance, leaf water potential, canopy temperature, soil water in storage and stolon elongation were measured over the experimental period. On day 95, above ground tissue was harvested for dry weight and elemental tissue analysis. Midday stomatal conductance decreased around day 30 in all columns regardless of soil salinity. This decrease was not associated with a threshold leaf water potential, as midday leaf water potentials remained constant over a 60 day period. Stolon elongation also ceased before any deviation in the midday leaf water potential occurred. A concomitant reduction in evapotranspiration was not associated with the measured decrease in stomatal conductance. This would suggest that bermudagrass may have regulated stomatal activity to compensate for lower conductances during periods of greater stress and/or that measured midday stomatal conductances cannot always be directly coupled to extended time evapotranspiration measurements."
Language:English
References:0
Note:Figures
Tables
See Also:Other items relating to: SALMT
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Devitt, D. A., D. C. Bowman, and P. J. Schulte. 1993. Response of Cynodon dactylon to prolonged water deficits under saline conditions. Plant Soil. 148(2):p. 239-251.
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