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The interspecific plant competition affects the production and the nutritive value of grassland species.

Authors
  • Carrère, Pascal
  • Pontes, Laíse da Silveira
  • Fabre, P.
  • Andueza, Jesus Donato
  • Louault, Frédérique
  • Soussana, Jean-François
Publication Date
Apr 03, 2006
Source
HAL-Descartes
Keywords
Language
English
License
Unknown
External links

Abstract

Five grassland species (Dactylis glomerata, Festuca arundinacea, F. rubra, Poa pratensis and Trisetum flavescens) were cultivated in monoculture and in mixture with a highly competitive cultivar of Dactylis glomerata (Lupre) in 2002 at Theix, Massif Central, France. This setup aimed to evaluate the impact of species interactions on the productivity and on the nutritive value of these grassland species differing in their growth strategies. All 5 species exhibited larger aboveground organs when submitted to competition with the cultivar and this was associated to an increase in the proportion of structural tissue and to a decline in their nutritive value. Aboveground production in competition increased for tall species but decreased for the small ones. For small species, frequent defoliation regime balanced the negative effect of competition.

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