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DOI: | 10.4141/P97-015 |
Web URL(s): | http://pubs.aic.ca/doi/pdfplus/10.4141/P97-015 Last checked: 10/01/2015 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | BĂ©langer, G. |
Author Affiliation: | Centre de recherche et de développement sur les sols et les grandes cultures, Agriculture et Agroalimentaire Canada |
Title: | Morphogenetic characteristics of timothy grown with varying N nutrition |
Section: | Agronomy Other records with the "Agronomy" Section
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Source: | Canadian Journal of Plant Science. Vol. 78, No. 1, January 1998, p. 103-108. |
Publishing Information: | Ottawa: Agricultural Institute of Canada |
# of Pages: | 6 |
Keywords: | TIC Keywords: Phleum pratense; Characteristics; Nitrogen deficiency; Leaf area; Radiation; Leaves; Morphology; Tillers (vegetative); Seasonal variation
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Abstract/Contents: | "The leaf area development of grasses and subsequently radiation interception depends on morphogenetic processes such as leaf extension and appearance. Leaf extension and appearance of timothy (Phleum pratense L.) grown with varying rates of N nutrition and their impact on sward structural characteristics were studied during primary growth in spring and during a summer regrowth. With no N applied in spring and summer, the leaf extension rate (LER) and the leaf appearance rate (LAR) of timothy were approximately 40% and 65% of that obtained under non-limiting N conditions (140 kg N haâ‚‹1 in spring and 120 kg N haâ‚‹1 in summer). Nitrogen deficiency reduced tiller density in spring but increased it in summer. The differential effect of the N deficiency on LER and LAR modified the sward structural characteristics. Nitrogen deficiency decreased the length of mature leaves, their width and the total leaf length per tiller. The reduced LER associated with N deficiency explained for the most part the N effect on leaf area expansion and radiation interception." |
Language: | English |
References: | 16 |
Note: | Figures Tables |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): BĂ©langer, G. 1998. Morphogenetic characteristics of timothy grown with varying N nutrition. Can. J. Plant Sci. 78(1):p. 103-108. |
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| DOI: 10.4141/P97-015 |
| Web URL(s): http://pubs.aic.ca/doi/pdfplus/10.4141/P97-015 Last checked: 10/01/2015 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: SB 1 .C3 |
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