La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	The modelling of the fruiting body formation of the black truffle Tuber melanosporum functions of the couple humidity-temperature of the soil
Auteurs :	A. Coquelin, Auteur ; F. Torre, Auteur ; R. Del-Négro, Auteur
Type de document :	Article
Dans :	Ecologia Mediterranea (33(1) 2007)
Article en page(s) :	15-28
Résumé :	The life cycle of the truffle has not been extensively studied and its mathematical modelling has never been proposed. Weekly production data of Tuber melanosporum (1987-2005) along with pedoclimatic data allow us to propose a process-based model of the number of fruit induction per square meter. The "Cycle biologique de Tuber melanosporum" (CBTM) model outputs give sound indications to locate in time the main stages of the development based on production data and some working hypothesis. Relationships with some pedo-climatic events are studied. Conditions for a "good season" are a soil temperature from 7.5 to 11 degrees C at the start of the induction period and a soil moisture above 16% all season long. This paper offers a renewed quantitative approach on the production of this particularly appreciated fungus and an agricultural methodology in the context of the decline of trufficulture for more than a century.

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