A stochastic approach for a model of flowering in kiwifruit `Hayward'
1999
Agostini, Dominique | Habib, R. | Chadœf, J.
A biologically based phenology model is proposed to simulate the flowering of the female kiwifruit `Hayward'. The heart of the model is a phenological sub-model describing the distribution of buds and flowers between several phenological stages. It is based on the model of Dennis et al. (1986) with temperature as driving variable, assuming that the development of a flower bud is a stochastic process consisting in accumulated small increments of development time, expressed in degree-hours. Another sub-model integrates quantitative elementary components which allows the simulation of the number of flowers. The model parameters have been estimated for the female cv. Hayward and have been fitted on a data set from 1991. Validation has been done on data sets from 1990 and 1992. Under the climatic conditions of Corsica, this model gives a good representation of the variability of delay in and intensity of flowering, and it fits well to the distribution of canes for flower number.
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