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| DOI: | 10.4141/cjps94-101 |
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| Web URL(s): | http://pubs.aic.ca/doi/pdfplus/10.4141/cjps94-101
Last checked: 10/01/2015
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Belanger, Gilles;
Gastal, Francois |
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| Author Affiliation: | Agriculture and Agri-Food Canada, Research Station, Fredericton, NB, Canada; INRA-Agronomie, Station d'Ecophysiologie des Plantes Fourrageres, Lusignan, France |
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| Title: | Effect of N fertilization on the photosynthesis of a tall fescue sward |
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| Source: | Canadian Journal of Plant Science. Vol. 74, No. 3, July 1994, p. 556. |
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| Publishing Information: | Ottawa: Agricultural Institute of Canada |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Nitrogen fertilization; Photosynthesis; Festuca arundinacea
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| Abstract/Contents: | "Canopy gross photosynthesis and shoot growth of tall fescue (Festuca arundinacea Schreb.) receiving four rates of N fertilization (0, 60, 120, and 180 kg N ha -1) were studied under field conditions during spring growth. The effect of leaf N concentration on the response of leaf photosynthesis to light intensity was investigated in a separate study. Cumulative shoot growth with no N fertilization was 42% of that obtained at the highest rate of N fertilization (non-limiting N conditions). In the absence of N fertilization and for a leaf area index of 3, the maximum canopy gross photosynthesis (canopy gross photosynthesis at saturating irradiance) was equal to 70% of that obtained at the highest rate of N fertilization. The maximum light yield (quantum efficiency at low irradiance) of the canopy was not affected by N fertilization. Leaf photosynthesis at saturating irradiance ranged from 11.8 to 29.1 mu mole CO2 m-2 s -1 with leaf N concentrations ranging from 15 to 38 g N g-1 DM. The maximum light yield of individual leaves was only slightly affected by leaf N concentration. The photosynthetic response of the tall fescue canopy to N fertilization, although significant, was less than that measured at the leaf level, and could not explain entirely the effect of N fertilization on shoot growth." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Belanger, G., and F. Gastal. 1994. Effect of N fertilization on the photosynthesis of a tall fescue sward. Can. J. Plant Sci. 74(3):p. 556. |
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| DOI: 10.4141/cjps94-101 |
| Web URL(s):
http://pubs.aic.ca/doi/pdfplus/10.4141/cjps94-101
Last checked: 10/01/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website
Notes: Item is within a single large file |
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MSU catalog number: SB 1 .C3 |
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