We have been visiting several projects on truffle farming in the central regions of Chile, especially in the sixth and seventh region. I show a couple of images from one of these plantations, mixed of holm oak (Quercus ilex), oak (Quercus robur), hazel (Corylus avellana) and a native chilean oak (Nothofagus oblique). The latter may be an interesting guest as a native tree to grow black truffles. At the moment, Nothofagus mycorrhization levels are adequate and in the image (leafless tree in the foreground) you can see the development of the brule, but it is too early to know how the level of truffles production will be.
On this plantation soil pH initially was riased up to 7.5 , but now, 7 years later, is between 7-7.2, so although brules are visible, lime is should be added again.
All the best,