Full TGIF Record # 251283
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Web URL(s):http://www.graszaad.info/onderzoeksverslagen/Proceedings%20of%20the%207th%20IHSC.pdf#page=66
    Last checked: 11/21/2014
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Publication Type:
i
Proceedings
Author(s):Flowers, M. D.; Hart, J. M.; Young, W. C. III; Garbacik, C. J.; Mellbye, M. E.; Silberstein, T. B.; Anderson, N.
Author Affiliation:Department of Crop and Soil Science, Oregon State University, Corvallis, OR
Title:In-season assessment of plant nitrogen status for perennial ryegrass seed production using remote sensing
Meeting Info.:Dallas, Texas: April 11-13, 2010
Source:Proceedings of the 7th International Herbage Seed Conference. 2010, p. 55-59.
Publishing Information:s.l.: s.n.
# of Pages:5
Keywords:TIC Keywords: Application rates; Evaluative methods; Fertilizer evaluation; Lolium perenne; Nitrogen fertilization; Remote sensing; Seed production; Tissue testing
Abstract/Contents:"The high nitrogen (N) fertilizer rates applied to perennial ryegrass combined with the winter rainfall pattern in western Oregon may result in reduced profitability for producers and N loss to the environment. Plant tissue testing to determine the in-season plant N status may improve N management. However, tissue testing can be costly, time consuming, and difficult for growers to adopt. A possible solution to these problems is remote sensing. The objective of this study was to determine if remote sensing in the form of aerial images could be used to assess the in-season plant N status of perennial ryegrass. Research was conducted at four sites in 2007, 2008, and 2009. Strong relationships were found between spectral measurements and both whole-plant N concentration (r2 = 0.46) and N uptake (r2 = 0.61) across site-years. Additionally, critical values obtained from these relationships were similar to those found through tissue testing, indicating that spectral measurements may be used to replace tissue tests to assess in-season plant N status of perennial ryegrass."
Language:English
References:10
Note:Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Flowers, M. D., J. M. Hart, W. C. III Young, C. J. Garbacik, M. E. Mellbye, T. B. Silberstein, et al. 2010. In-season assessment of plant nitrogen status for perennial ryegrass seed production using remote sensing. p. 55-59. In Proceedings of the 7th International Herbage Seed Conference. Dallas, Texas: April 11-13, 2010. s.l.: s.n.
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http://www.graszaad.info/onderzoeksverslagen/Proceedings%20of%20the%207th%20IHSC.pdf#page=66
    Last checked: 11/21/2014
    Requires: PDF Reader
    Notes: Item is within a single large file
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