Full TGIF Record # 231895
Item 1 of 1
DOI:10.1080/01904168509363381
Web URL(s):https://www.ars.usda.gov/ARSUserFiles/60100500/csr/ResearchPubs/torbert/torbert_85a.pdf
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http://www.tandfonline.com/doi/pdf/10.1080/01904168509363381
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Publication Type:
i
Report
Author(s):Torbert, H. A.; Edwards, J. H.; Pedersen, J. F.
Author Affiliation:Department of Agronomy and Soils, Alabama Agricultural Experiment Station and U.S. Department of Agriculture, Agricultural Research Service, Auburn University, AL
Title:Growth and magnesium uptake of tall fescue clones with varying root diameters
Source:Journal of Plant Nutrition. Vol. 8, No. 8, 1985, p. 731-749.
# of Pages:19
Publishing Information:New York, New York: Marcel Dekker, Inc.
Related Web URL:http://www.tandfonline.com/doi/abs/10.1080/01904168509363381
    Last checked: 10/31/2013
    Notes: Abstract only
Keywords:TIC Keywords: Cool season turfgrasses; Evaluations; Festuca arundinacea; Growth analysis; Magnesium; Root diameter; Uptake
Abstract/Contents:"A cool season perennial grass with a root system capable of penetrating hardpans and which can accumulate adequate Mg to prevent deficiencies in forage is needed in the Coastal Plain region. A greenhouse experiment was conducted to determine the effects of magnesium (Mg) concentration in nutrient solution and root diameter on Mg uptake and growth of tall fescue (Festuca arundinacea Schreb.). Propagules of two fescue clones with large root diameter (LDR >1 mm), two clones with small root diameter (SDR <0.8 mm), and a single clone from 'Kentucky 31' (Ky-31) were transferred into 12-liter tanks containing Mg concentrations of 3, 21, 42, 125, 250, and 500 μM as MgSO4 and grown for 39 or 70 days. Leaf Mg concentration was increased linearly with Mg solution concentration in LDR clones for a 39-day growth period (Harvest 1), but increased according to a cubic equation in the SDR clones and the Ky-31. Predicted leaf Mg concentration as a function of solution Mg followed a cubic equation for a 70-day growth period (Harvest 2) in all clones. Predicted root Mg concentration was linearly related to Mg solution concentration for the LDR clones and the Ky-31, but followed a cubic equation for the SDR clones for the first growth period. For the second growth period, the root Mg concentration of the SDR clones and the Ky-31 was increased linearly, while the LDR clones followed a quadratic equation. Magnesium uptake followed a cubic equation with Mg solution concentration for both growth periods on all tall fescue clones. This nonlinear variation of Mg uptake and plant Mg concentration with respect to solution Mg concentration strongly suggests that a dual uptake mechanism might have been present in tall fescue clones. Root volume was greater in the SDR than LDR clones or Ky-31 for both growth periods. The Ky-31 had the greatest leaf and root dry weight for both growth periods, while the LDR clones had the lowest."
Language:English
References:13
Note:Equations
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Torbert, H. A., J. H. Edwards, and J. F. Pederson. 1985. Growth and magnesium uptake of tall fescue clones with varying root diameters. J. Plant Nutr. 8(8):p. 731-749.
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DOI: 10.1080/01904168509363381
Web URL(s):
https://www.ars.usda.gov/ARSUserFiles/60100500/csr/ResearchPubs/torbert/torbert_85a.pdf
    Last checked: 01/31/2017
    Requires: PDF Reader
http://www.tandfonline.com/doi/pdf/10.1080/01904168509363381
    Last checked: Item not verified
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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