Full TGIF Record # 71154
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Web URL(s):http://www.tandfonline.com/doi/abs/10.1080/01904169609365168
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http://www.tandfonline.com/doi/pdf/10.1080/01904169609365168?needAccess=true
    Last checked: 01/29/2018
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Publication Type:
i
Report
Author(s):Kantety, R. V.; Van Santen, Edzard; Woods, F. M.; Wood, C. W.
Author Affiliation:Department of Agronomy and Soils and Department of Horticulture; Auburn University, Alabama, AL
Title:Chlorophyll meter predicts nitrogen status of tall fescue
Source:Journal of Plant Nutrition. Vol. 19, No. 6, 1996, p. 881-899.
# of Pages:19
Publishing Information:New York: Marcel Dekker, Inc.
Keywords:TIC Keywords: Nitrogen; Nitrogen fertilization; Nutritional requirements; Endophytes; Measurement; Chlorophyll; Festuca arundinacea; Dry weight; Fertilization rates; Acremonium coenophialum; Genotypes; Soil types; Lolium multiflorum; Seasonal variation; Models
Abstract/Contents:"The nitrogen (N) status of a crop can be used to predict yield and supplemental N fertilizer requirements, and rapid techniques for evaluating the N status of crops are needed. A study was conducted to determine the feasibility of using a hand held chlorophyll meter (SPAD 502, Minolta Co. Ltd., Japan) to monitor N status of tall fescue (Festuca arundinacea Schreb.). Four diverse tall fescue genotypes were grown at three locations in Alabama and fertilized at four N-rates from 0 to 336 kg ha⁻¹. A similar experiment was conducted in the greenhouse using soil from the same field sites. Chlorophyll meter readings (SPAD) were taken, and extractable chlorophyll content, tissue N concentration and dry matter yield were determined at harvest. SPAD, extractable chlorophyll content, tissue N concentration, and dry matter yield increased quadratically (0.670.95. An additional independent variable, the square root of the inverse of SPAD, lowered the residual mean square by 11 and 16%, respectively, for tissue-N and chlorophyll concentrations, but did not increase the R². This would be preferred for predicitive purposes. Tissue N concentrations at higher N-rates were sufficient for maximum yield which occurred at 290 and 248 kg N ha⁻¹ for greenhouse and field, respectively, but were lower than previously reported sufficiency values. The chlorophyll meter is an easy and efficient method of detecting tall fescue N status."
Language:English
References:19
Note:Graphs
Tables
Geographic Terms:Alabama
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kantety, R. V., E. Van Santen, F. M. Woods, and C. W. Wood. 1996. Chlorophyll meter predicts nitrogen status of tall fescue. J. Plant Nutr. 19(6):p. 881-899.
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Web URL(s):
http://www.tandfonline.com/doi/abs/10.1080/01904169609365168
    Last checked: 10/13/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
http://www.tandfonline.com/doi/pdf/10.1080/01904169609365168?needAccess=true
    Last checked: 01/29/2018
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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MSU catalog number: QK 867 .J67
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