I have a Chestnut tree grown from seed. Chestnuts cannot tolerate alkalinity and that is a big problem where I live (Jerusalem).
the soil around here is full of Chalck an Dolomite and has a very high Ph.
As a result of that the tap water Ph is almost 8 and that is enough to kill a Chestnut by irrigation only, even if the soil is acidic.
right now my Chestnut grow in a pot with acidic soil and distilled water irrigation.
i know Chestnuts can be grafted successfully on many species of Oaks and that may be the only way to plant a Chestnut in the rocky alkaline ground. many Oak species thrive around here, the most common species are Quercus ithaburensis and Quercus boissieri which are native and also Quercus robur that is relatively new in this area but grows well.
Do anybody have an experience grafting Chestnut of those species? except the three listed above, many other Oaks grow here and if there are some specific species of oaks that are more compatible as a rootstock I would love to know about them.
Also, there is that method of grafting called Nutgrafting (photo attached below) and I wonder if it can be applied on acorns rather than Chestnus?