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| Web URL(s): | http://www.jstor.org/stable/pdfplus/2259924.pdf
Last checked: 08/09/2012
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Gay, Pamela E.;
Grubb, P. J.;
Hudson, H. J. |
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| Author Affiliation: | Botany School, University of Cambridge, England |
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| Title: | Seasonal changes in the concentrations of nitrogen, phosphorus and potassium, and in the density of mycorrhizae, in biennial and matrix-forming perennial species of closed chalkland turf |
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| Source: | Journal of Ecology. Vol. 70, No. 2, July 1982, p. 571-593. |
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| # of Pages: | 23 |
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| Related Web URL: | http://www.jstor.org/stable/info/2259924
Last checked: 08/09/2012
Notes: Abstract only |
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| Keywords: | TIC Keywords: Mycorrhizal fungi; Carex flacca; Festuca ovina; Plant communities; Calcareous grasslands; Plant composition; Nutrients; Linum catharticum
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| Geographic Terms: | UK |
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| Abstract/Contents: | "(1) Annual and biennial species which occur on chalk-derived soils in Britain may be divided into those which are `turf-compatible', i.e. able to regenerate in closed turf, and those which are `turf-incompatible', i.e. able to develop only on sizeable patches of bare soil. As part of an investigation into the characteristics which enable certain species to be turf-compatible, a study has been made of their nutrient economy and mycorrhiza. (2) Seasonal changes in the concentrations of nitrogen, phosphorus and potassium, and the density of mycorrhiza, have been studied in spontaneous populations of four turf-compatible biennial species (Blackstonia perfoliata , Centaurium erythraea, Gentianella amarella and Linum catharticum) and three matrix-forming perennial species (Carex flacca, Festuca ovina and Sanguisorba minor) of chalk grassland. The concentrations of N, P and K in six turf-incompatible annual and biennial species were studied in the spring. (3) Most of the N, P and K accumulated by the turf-compatible biennial plants was absorbed during their second summer, at the time of their fastest growth. (4) The concentrations of N, P and K in the turf-compatible biennial plants at maturity were similar to those in the perennial plants sampled at the same time. (5) The concentrations of N, P and K in the shoots of the turf-compatible biennial plants in the spring were much lower than those in the shoots of the turf-incompatible annuals and biennials sampled at the same season. (6) The mycorrhiza of plants of the four turf-compatible biennial species are peculiar in form, but are tentatively interpreted as variants of the vesicular-arbuscular type. The density of mycorrhiza showed marked seasonal variation, being highest in the autumn of the first year, and the summer of the second. (7) In a field experiment seedlings of species representing all three types of plant became mycorrhizal within about two weeks of germination. (8) These findings are discussed in relation to the ability of the turf-compatible biennial plants to survive in chalk grassland." |
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| Language: | English |
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| References: | 31 |
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| See Also: | Other items relating to: Potassium |
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| Note: | Summary appears as abstract
Pictures, b/w
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gay, P. E., P. J. Grubb, and H. J. Hudson. 1982. Seasonal changes in the concentrations of nitrogen, phosphorus and potassium, and in the density of mycorrhizae, in biennial and matrix-forming perennial species of closed chalkland turf. J. Ecol. 70(2):p. 571-593. |
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| Web URL(s):
http://www.jstor.org/stable/pdfplus/2259924.pdf
Last checked: 08/09/2012
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QH 540 .J6 |
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