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| Web URL(s): | http://www.tandfonline.com/doi/pdf/10.1080/01904169809365477
Last checked: 10/13/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Report |
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| Author(s): | Sembiring, H.;
Raun, W. R.;
Johnson, G. V.;
Stone, M. L.;
Solie, J. B.;
Phillips, S. B. |
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| Author Affiliation: | Sembiring, Raun, Johnson, and Phillips: Department of Plant and Soil Sciences; Stone and Solie: Department of Biosystems and Agricultural Engineering, Oklahoma State University, Stillwater, Oklahoma |
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| Title: | Detection of nitrogen and phosphorus nutrient status in bermudagrass using spectral radiance |
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| Source: | Journal of Plant Nutrition. Vol. 21, No. 6, 1998, p. 1189-1206. |
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| Publishing Information: | New York: Marcel Dekker, Inc. |
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| # of Pages: | 17 |
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| Keywords: | TIC Keywords: Nitrogen; Phosphorus; Nutrient availability; Spectral radiance; Cynodon dactylon; Measurement; Nitrogen uptake; Uptake; Biomass
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| Abstract/Contents: | "Nitrogen (N) and phosphorus (P) are two of the most limiting nutrients for crop production. Because of this, continued interest focuses on improving N- and P-use efficiency. Spectral radiance measurements were evaluated to identify optimum wavelengths for dual dectection of N and P status in bermudagrass (Cynodon dactylon L.). A factorial arrangement of treatments (0, 112, 224, and 336 kg N ha⁻¹ and 0, 29, and 58 kg P ha⁻¹) was applied to an established bermudagrass pasture for further study using a randomized complete block design. A wide range of spectral radiance measurements (276-831 nm) was obtained from each plot using a PSD1000 Ocean Optics fiber optic spectrometer. The resulting spectra were partitioned in 10-nm bands. Added indices were generated to test for correlation of N and P content with spectral radiance. The 435-nm band (430-440 nm) was found to be independent of N and P treatment, and as a covariate, significantly decreased residual error. Using 435 nm as a covariate, it was found that biomass, N uptake, P uptake, and N concentration could be predicted using 695/405. No index reliably predicted bermudagrass forage P concentration. Spectral radiance has the potential to be used for predicting N and P nutrient status, but further work is needed to document response in different environments." |
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| Language: | English |
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| References: | 13 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sembiring, H., W. R. Raun, G. V. Johnson, M. L. Stone, J. B. Solie, and S. B. Phillips. 1998. Detection of nitrogen and phosphorus nutrient status in bermudagrass using spectral radiance. J. Plant Nutr. 21(6):p. 1189-1206. |
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| Web URL(s):
http://www.tandfonline.com/doi/pdf/10.1080/01904169809365477
Last checked: 10/13/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: QK 867 .J67 |
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