One way to restore degraded soil is to plant trees—lots of them. The catch is that seeds and saplings won’t grow in such soil, but if a young tree becomes large enough that its roots can reach groundwater it stands an excellent chance of thriving. Previous efforts often followed two paths: cumbersome and impractical irrigation techniques, or tossing a few million seeds out of an airplane and hoping for the best. Ruys’s innovation was to develop a doughnut-shaped waxed-paper cocoon, the base of which is buried underground. It contains the sapling, enough water to sustain the tree while it establishes a root system, and a small lozenge of beneficial fungi. The cocoon is cheap, easy to plant, scalable—a community can plant hundreds of acres of them in a short time—and biodegradable. Rubio told me that in the desert regions of Spain where his organization is working, other efforts have resulted in a success rate of ten to twenty per cent; “the cocoon,” he said, “is providing around ninety-five per cent survival rate of trees.”
Jay Vinekeeper wrote:To be clear ... you are interested in NUT production as opposed to simply timber production? .... In my opinion, this grafting MAY be valuable for nut production but is almost useless for producing timber type trees.
Is your superior mother tree a heavy and reliable producer? Can you post or send pictures of the mother tree. Full view and close up to illustrate nut production pattern?
How tall is the mother? I ask because the best scion wood for grafting is likely to be high on the tree and difficult to gather.