Grafting Apple Branches

Question

How do l graft apple branches into the main trunk of another apple tree. I understand grafting from the branch of one tree to the branch of another tree, but l want to graft into the main part of the tree.

Answer 1

These articles should help:

https://propg.ifas.ufl.edu/06-grafting/02-graftingtypes/02-grafting-bark.html

https://ucanr.edu/sites/camg2011/files/101893.pdf

https://www.gardeningknowhow.com/ornamental/trees/tgen/grafting-trees-what-is-tree-grafting.htm