Résultat de la recherche
30 recherche sur le mot-clé 'model'
article/chapitre/communication
J. Lerin ; K. koubati | 1997article/chapitre/communication
H. Barclay | 1996The development of resistance to insecticides is now widespread among insects. Other methods of pest control are also potentially at risk of encountering resistance. A modelling approach is presented here to evaluate the effects of combining met[...]article/chapitre/communication
J. Briere ; P. Pracros ; A. Le roux ; J. Pierre | 1999article/chapitre/communication
C. Doussan ; G. Vercambre ; L. Pagès | 1998The 'Hydraulic Tree Model' of the root system simulates water uptake through root systems by coupling a root architecture model with laws for water flow into and along roots (Doussan, Pages and Vercambre, Annals of Botany 81: 213-223, 1998). A d[...]article/chapitre/communication
C. Doussan ; L. Pagès ; G. Vercambre | 1998A numerical model simulating water uptake by root systems is presented. This model can combine the locally measured root hydraulic conductances with data on the root system architecture to give a detailed description of water absorption, from th[...]article/chapitre/communication
J. Thornley | 1999A model of stem height and diameter growth in plants is developed. This is formulated and implemented within the framework of an existing tree plantation growth model: the ITE Edinburgh Forest Model. It is proposed that the height: diameter grow[...]article/chapitre/communication
J. Sheehy ; P. Mitchell ; J. Durand ; F. Gastal ; F. Woodward | 1995Translocation coefficients, computed for unit ground area, are required in crop models as part of the simulation of the partitioning of assimilates. An equation for translocation is derived by considering pressure-driven flow and the physical di[...]article/chapitre/communication
R. Roche ; M. Jeuffroy ; B. Ney | 1999article/chapitre/communication
P. Bussières | 1995The change in water import rate in tomato fruit was modelled by incorporating into a previously-published model the changes in sap viscosity and osmotic potential into fruit with temperature. An experimental relationship between water and dry ma[...]article/chapitre/communication
article/chapitre/communication
A mathematical model of carbon accumulation by growing fruit is presented. The model implicitly incorporates the concepts of sink activity and sink size but avoids the need to stipulate sink strength. In addition to sink activity and size, carbo[...]article/chapitre/communication
R. Roche ; M. Jeuffroy ; B. Ney | 1998The final number of reproductive nodes (TRN) is highly variable in pea under field conditions and can limit yield. However, the determinants of this variability are unknown. This is a problem for crop managers and for many crop simulation models[...]article/chapitre/communication
C. Bruchou ; M. Génard | 1999A carbon-based model is described of the source-sink relationships of a stem bearing fruits in space and time and focusing on growth variability along the branch. The novelty of the model comes from the aggregation of physiological processes tak[...]article/chapitre/communication
A. Lacointe | 2000article/chapitre/communication
R. Roche ; M. Jeuffroy ; B. Ney | 1999In pea, the time of flowering is mainly related to the photoperiod (P) and mean temperature (T-m) during the vegetative period. In field conditions, both variables depend mainly on the latitude (LAT) and the date of sowing (RDS). On the basis of[...]