Propagation: some questions..., 1 by Stake

Stake wrote:
G'Day
I managed a nursery that produced Vines and Trees for commercial growers and during the vine planting boom of the 1990s we grew just over a million "Own rooted" and 100,000 grafted vines per year as well as our fruit trees which amounted to about 50,000. The term "Own rooted" is used for the cuttings that produce their own roots, the same as cuttings you grow at home. From 2000 the demand for vines declined and last year we only grew about 50,000 Own rooted and 30,000 grafted vines. Photo is of the vine patch with digging in progress, the bare ground had been dug prior to the photo being taken, with a lot more to go. Each row has about 4,000 rootlings in it. The vines are "Dug" with a special machine that lifts the young rootlings out of the soil, shakes them so that most of the dirt falls off then ties them into bundles ready for transport to the packing sheds. I must tell you that we were only a medium sized nursery some were handling up to 5 million per year.
Regards