Trapping truffle production in holes: a promising technique for improving production and unravelling truffle life cycle
Claude Murat | Lucien Bonneau | Herminia De La Varga | Jean-Marc Olivier | Fizzala Sandrine | François Le Tacon
The Périgord black truffle, Tuber melanosporum Vittad., is an ectomycorrhizal fungus that forms edible hypogeous ascomata. It is now harvested in plantations and is recognized as an agricultural product by European policy. Empirical techniques without scientific demonstration of their efficiency are often used to improve the production of truffles in plantations. One of these techniques is “truffle trapping” which consists in practicing holes inside the potential productive area and to fill them with a substrate containing ascospores. We report an experiment in a truffle orchard where 784 holes were set under 196 trees. Two years after the installation of the holes, 95% of the truffles were found inside the holes corresponding to only 5% of the productive area. This study confirms the efficiency of this empirical technique and demonstrates new ways for in situ studies of the truffle life cycle.
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