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| Web URL(s): | http://www.tandfonline.com/doi/abs/10.1080/01904169609365168
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| Publication Type:
| Report |
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| Author(s): | Kantety, R. V.;
Van Santen, Edzard;
Woods, F. M.;
Wood, C. W. |
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| Author Affiliation: | Department of Agronomy and Soils and Department of Horticulture; Auburn University, Alabama, AL |
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| Title: | Chlorophyll meter predicts nitrogen status of tall fescue |
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| Source: | Journal of Plant Nutrition. Vol. 19, No. 6, 1996, p. 881-899. |
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| # of Pages: | 19 |
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| Publishing Information: | New York: Marcel Dekker, Inc. |
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| 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
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| 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." |
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| Language: | English |
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| References: | 19 |
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| Note: | Graphs
Tables |
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| Geographic Terms: | Alabama |
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| 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 |
| 
MSU catalog number: QK 867 .J67 |
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