First results of borchii infection on Dundee hazels


 

Last year we started a project focused to get truffles as a complementary crop of hazel nut plantations. The innovative of this approach is to consider truffles as a complement, so managing hazel is fully focused on the production of hazelnuts. This means that some of the treatments applied may be, a priori, harmful to Tuber mycorrhizae.
We use the technique of root dip at two phases of the implementation process of the hazels raised in Coselva (the largest nut trader cooperative in Catalonia). This is at the rooting phase of the variety Dundee produced in vitro (latter grafted with the variety of hazelnut desired, mostly Negret N-9, who is resident to some viruses) and at the phase of field out plant.

A year after inoculation in both phases we already have the first results. In the case of root dip at seedling stage to in vitro Dundee variety, we detected the presence of mycorrhizae in all samples analyzed. However, as we expected, infection levels were lower than those obtained in our nurseries for the production of mycorrhizal plants (an average of 35% +/- 5%) in nurseries of Coselva versus > 60 % of our comercializated trees). In the case of the grafted and out planted in field, mycorrhizae also were detected in most samples, but levels of infection were more variable (0-50%). 
These results are lower than similar previous project made in Chile.
It should be noted that management applied to the hazels in this project is the same used for the cultivation of the nut (use of fertilizers, pesticides, tillage, pruning, etc.) In this sense, it seems remaracable the finding of mycorrhizae.  Again we conclude how competitive Tuber borchii is, as we already found in the inoculations done in wild oaks and pines in Portugal.

Xavier Vilanova & Marcos  Morcillo

About trufflefarming

CEO of Micofora. Truffles and edible wild mushroom science and farming. Researcher, truffle farmer & mycologist
This entry was posted in Truffle farming, truffle growing, truffle nurseries, spanish truffle orchards, Uncategorized and tagged , , , , , . Bookmark the permalink.

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