understock

Note by Editor: An Oregon nursery, which formerly propagated European filberts on the Turkish understock, now has abandoned its use.

Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948

But it appears more likely that some northern pecan seed can be found which will produce a hardy understock to furnish a seedling of sufficient vigor and size for propagating purposes in five years or less.

Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948

The suggested understock is black walnut (_J. nigra_) though established hardy Carpathian and other Persian walnuts may be satisfactory for top working.

Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting Urbana, Illinois, August 28, 29 and 30, 1951

It is possible that this factor may be overcome by using Turkish hazel (_C. colurna_ L.) as an understock and grafting or budding thereon the varieties that sprout when on their own roots.

Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948

The grafts had blended with the understock and the offspring was different from either parent.

Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952

The use of eastern black walnut as understock has been practised by several orchardists and nurserymen, and a few will have trees for sale in the near future.

Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting Urbana, Illinois, August 28, 29 and 30, 1951

Illinois orchard is on a Wisconsin bitternut understock.

Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting Urbana, Illinois, August 28, 29 and 30, 1951

You cut your scion wedge and then make your understock cut and you will seldom make a mistake after you get experience.

Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting Urbana, Illinois, August 28, 29 and 30, 1951

Broadview has often suffered winter injury at both locations, and in 1950-51 was killed to the understock at Urbana.

Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting Urbana, Illinois, August 28, 29 and 30, 1951

I am wondering from what Mr. Hardy has told us today if it may not be an understock problem, and if it is an understock problem -- if there are certain strains of understock which are compatible with certain scions, possibly we should ask for some investigations, some more research to be done in this direction.

Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948