Grasslands

  • M. Duru
  • G. Lemaire
  • P. Cruz

Abstract

Natural grasslands have a very large range of diversity both in terms of botanical composition, and with respect to edaphic and climatic conditions, in temperate and tropical regions. Moreover, grasslands are subjected to a wide variety of defoliation treatments according to management plans. This diversity of conditions leads to large temporal and spatial variations in sward structure: i.e., botanical composition, plant morphology and architecture, plant growth habits, which make it difficult to use a diagnosis of the sward state to predict either its growth potential or its ability to be grazed and to provide adequate feed for animals.

Keywords

Biomass Phosphorus Maize Cage Assimilation 

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References

  1. Callot G, Chamayou H, Martens C, Salsac L (1982) Les interactions sol-racine. Incidence sur la nutrition minérale. INRA, Paris, 325 ppGoogle Scholar
  2. Duru M (1992) Diagnostic de la nutrition minerale de prairies permanentes au printemps. I. Etablissement de references. Agronomie 12:219–233Google Scholar
  3. Duru M (1994) Mineral nutrition status botanical composition of pastures. II. Effect on nitrogen concentration and digestibily of herbage. Eur J Agron 3:93–174Google Scholar
  4. Duru M, Langlet A (1994) Croissance de repousses de luzerne et dactyle. I. Interaction eau azote. Agrochimica 38:285–294Google Scholar
  5. Duru M, Balent G, Langlet A (1994) Mineral nutrition status and botanical composition of pastures. I. Effect on herbage accumulation.Eur J Agron 3:43–51Google Scholar
  6. Lemaire G, Denoix A (1987) Croissance estivale en matière sèche de peuplements de fétuque elevée et de dactyle dans l’Ouest de la France. II. Interaction entre les niveaux d’alimentation hydrique et de nutrition azotèe. Agronomie 7:381–389CrossRefGoogle Scholar
  7. Pons Y, Lafon E (1991) Comment dèterminer les facteurs limitants d’une prairie au printemps? Cas des Marais de l’Ouest. Fourrages 125:19–28Google Scholar
  8. Poorter H, Remkes C (1990) Leaf area ratio and net assimilation rate of 24 wild species differing in relative growth rate. Oecologia 83:553–559CrossRefGoogle Scholar
  9. Poorter H, Remkes C, Lambers H (1990) Carbon and nitrogen economy of 24 wild species differing in relative growth rate. Plant Physiol 94:621–627PubMedCrossRefGoogle Scholar
  10. Salette J (1982) The role of fertilizers in improving herbage quality and optimization of its utilization. Proc 12th Int Potash Institute Congr, Goslar, June 1982, 305 pp. Ed IIP, Berne, pp 117-144Google Scholar
  11. Salette J (1990) The effect of level of nitrogen nutrition upon mineral content and removal in grasses and wheat. Fert Res 26:229–235CrossRefGoogle Scholar
  12. Salette J, Huche L (1991) Diagnostic de l’état de nutrition minérale d’une prairie par 1’analyse minérale du végétal: principes, mise en oeuvre, exemples. Fourrages 125:3–18Google Scholar
  13. Sousana JF, Arregui MC (1995) Impact de l’association sur le niveau de nutrition azotée et la croissance du ray-grass et du trefle blanc. Agronomie 15:81–96CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • M. Duru
    • 1
  • G. Lemaire
    • 2
  • P. Cruz
    • 3
  1. 1.INRA Station d’Agronomie, AuzevilleCastanet-TolosanFrance
  2. 2.INRA Station d’Ecophysiologie des Plantes FourragèresLusignanFrance
  3. 3.Station d’Agropédoclimatologie INRA, Petit-BourgPointe à Pitre Cédex, AntillesFrançaises

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