Will an apple limb with burr knot root easily?

I have apple trees with burr knot located low on several limbs. From what I’ve read, these are basically root initials. I’m thinking about attempting to air layer those limbs at the site of the burrs (next spring). Has anyone tried this?

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I haven’t attempted air layering at the burr but I think that they will root easily. Let us know how it works out. Thanks

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There is an English variety of apple know as Burr Knot that was used for root stock because it has so many burrs that rooted easily.

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Applenut has posted of a project he is (was) involved in to bring apple farming to tropical Africa. Their root stock of choice was Northern Spy, a variety that produces burr knots. I believe he produced the rootstock from cuttings.

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