Whist macadamia can be reproduced by cuttings, in commercial practice grafting is more common.  I'll send information on grafting if you wish

Dear Professor,

Here in Brazil, we also use propagation by grafting. I was interested in the production by cuttings because I found on the Internet, two nursery seedling production by cuttings, in South Africa. See website: http://www.bonniebraesnursery.co.za/gallery.html

semi hard wood cuttings can be used to produce macadamia plants. Flowering and fruit setting occurs within 3 years

Ranawaka,

thank you for your attention.

You can tell me what the hormone and the dosage used to produce roots ?

I didnt use any hormones. selected cuttings planted in poly bags and kept them in a propagator for about one month period

Interesting Ranawaka.

We tried here, but rooting was small, below 20%.

Which varieties of macadamia you worked?

Actually I dont know the variety name. We have only one mother tree in my place. I got cuttings from that tree, I got about 200 plants using cuttings and it was very successful. 4 years ago I planted such cutting in the field and now it is a about 20 feet high.