Un modèle générique de digestibilité des graminées des prairies semées et permanentes pour raisonner les pratiques agricoles

La hierarchisation des principaux facteurs de variation de la digestibilite des fourrages (especes, stade physiologique du couvert, conditions de croissance, pratiques de fertilisation ou d’exploitation...) necessite de les integrer dans un modele unique. Un modele d’evolution de la digestibilite du fourrage sur pied au cours d’une pousse, enrichi par des connaissances en ecologie et en ecophysiologie, est ici propose.

[1]  M. Duru,et al.  In vitro digestibility response of cocksfoot (Dactylis glomerata L.) to growth and defoliation: a simple model , 1999, The Journal of Agricultural Science.

[2]  M. Duru,et al.  A Model of Lamina Digestibility of Orchardgrass as Influenced by Nitrogen and Defoliation. , 2002, Crop science.

[3]  H. Poorter,et al.  The chemical composition and anatomical structure of leaves of grass species differing in relative growth rate , 1994 .

[4]  J. Groot,et al.  Composition and digestibility during ageing of consecutive leaves on the main stem of Italian ryegrass plants, growing undisturbed or regrowing after cutting , 1999 .

[5]  J. Aufrere.  Etude de la prévision de la digestibilité des fourrages par une méthode enzymatique , 1982 .

[6]  Duru,et al.  The effect of N and P fertilizer application and botanical composition on the leaf/stem ratio patterns in spring in Pyrenean meadows , 1999 .

[7]  G. Lemaire,et al.  N Uptake and Distribution in Plant Canopies , 1997 .

[8]  M. Duru,et al.  Growth and Senescence of the Successive Grass Leaves on a Tiller. Ontogenic Development and Effect of Temperature , 2000 .

[9]  J. Dulphy,et al.  Prévision de la digestibilité des fourrages par la méthode pepsine-cellulase. Le point sur les équations proposées , 2007 .

[10]  M. Caloin,et al.  Analysis of the Time Course of Change in Nitrogen Content in Dactylis glomerata L. Using a Model of Plant Growth , 1984 .

[11]  M. Roderick,et al.  Challenging Theophrastus: A common core list of plant traits for functional ecology , 1999 .

[12]  J. Groot,et al.  Analysis of the temperature effect on the components of plant digestibility in two populations of perennial ryegrass , 2003 .

[13]  M. Bruinenberg,et al.  Factors affecting digestibility of temperate forages from seminatural grasslands: a review , 2002 .

[14]  M. Duru.  Leaf and stem in vitro digestibility for grasses and dicotyledons of meadow plant communities in spring , 1997 .

[15]  D. Schemske,et al.  Flowering Ecology of Some Spring Woodland Herbs , 1978 .

[16]  G. Lemaire.  Relation entre croissance et qualité de la luzerne : interaction génotype-mode d'exploitation , 1993 .

[17]  C. Mcmillan.  NATURE OF THE PLANT COMMUNITY. III. FLOWERING BEHAVIOR WITHIN TWO GRASSLAND COMMUNITIES UNDER RECIPROCAL TRANSPLANTING , 1957 .

[18]  M. Duru,et al.  Effect of nitrogen fertiliser supply and winter cutting on morphological composition and herbage digestibility of a Dactylis glomerata L sward in spring , 2000 .

[19]  T. Sparks,et al.  An examination of the relationship between flowering times and temperature at the national scale using long-term phenological records from the UK , 2000, International journal of biometeorology.

[20]  M. Duru,et al.  Effets des niveaux de nutrition en phosphore et en azote et de la composition botanique de communautés prairiales sur l'accumulation de biomasse au printemps , 1996 .

[21]  M. Duru,et al.  Functional diversity in low-input grassland farming systems: characterisation, effect and management , 2005 .

[22]  R. Lillak,et al.  Integrating efficient grassland farming and biodiversity. Proceedings of the 13th International Occasional Symposium of the European Grassland Federation, Tartu, Estonia, 29-31 August 2005. , 2005 .