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| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2005.01332.x/epdf
Last checked: 10/07/2015
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| Publication Type:
| Refereed |
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| Author(s): | Soussana, Jean-Francois;
Teyssonneyre, Florence;
Picon-Cochard, Catherine;
Dawson, Lorna |
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| Author Affiliation: | Soussana, Teyssonneyre, and Picon-Cochard: INRA, Grassland Ecosystem Research, Clermont-Ferrand, France; Dawson: The Macaulay Institute, Craigiebuckler, Aberdeen AB15 United Kingdom |
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| Title: | A trade-off between nitrogen uptake and use increases responsiveness to elevated CO2 in infrequently cut mixed C3 grasses |
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| Section: | Research
Other records with the "Research" Section
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| Source: | New Phytologist. Vol. 166, No. 1, April 2005, p. 217-230. |
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| Publishing Information: | Oxford, England: Blackwell Publishing, for the New Phytologist Trust |
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| # of Pages: | 14 |
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| Keywords: | TIC Keywords: Nitrogen uptake; Nitrogen use; Carbon dioxide; C-3 plant; Mowing frequency; Lolium perenne; Festuca arundinacea; Holcus lanatus; Nitrogen efficiency; Root weight; Competition
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| Abstract/Contents: | "The aim of this study was to evaluate whether the responsiveness of mixed C3 grass species to elevated CO2 is related more to nitrogen uptake or to N-use efficiency. Nitrogen uptake and whole-plant N-use efficiency were investigated with two binary mixtures: Lolium perenne was mixed either with Festuca arundinacea or with Holcus lanatus. The swards were grown on sand with or without CO2 doubling, and subjected to two cutting frequencies. A C20 alcohol was used as a marker to determine species proportion in the total root mass of the mixtures. The mean residence time of N was calculated from that of 15N-labelled fertilizer. Lolium perenne took up significantly more N per unit root mass than its grass competitors, but its N-use efficiency was lower. Elevated CO2 significantly reduced the N uptake of the three grass species. A trade-off between N capture and use was found, as N-use efficiency and N-uptake rate were negatively correlated. A high N-use efficiency, and conversely low N uptake appeared to favour the responsiveness to elevated CO2 of the infrequently cut grasses." |
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| Language: | English |
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| References: | 42 |
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| Note: | Graphs
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Soussana, J.-F., Florence Teyssonneyre, Catherine Picon-Cochard, and L. Dawson. 2005. A trade-off between nitrogen uptake and use increases responsiveness to elevated CO2 in infrequently cut mixed C3 grasses. New Phytol. 166(1):p. 217-230. |
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| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2005.01332.x/epdf
Last checked: 10/07/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QK 1 .N38 |
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