th this particular variety. This
particular performance is indicative of things to be expected for this
combination in the future.

In conclusion I would say that the pecan is far from being a practical
nut tree for our vicinity, and is only a very hopeful dream. But so,
also, were the best hickory varieties 30 years ago when I first began my
experiments.

FOOTNOTES:

[Footnote 9: The Norton name seems to be shared by a pecan and a hican.
The Burton hican from Owensboro, Ky., is presumably a pecan-shagbark
cross with an excellent nut, fruitful farther south.--Ed.]

Preliminary Report on Growth, Flowering, and Magnesium Deficiency of
Reed and Potomac Filbert Varieties

H. L. CRANE AND J. W. MCKAY[10]

During the course of filbert breeding investigations at the Plant
Industry Station, Beltsville, Md., covering a period of approximately 18
years, the leaves of certain seedlings scorched badly in mid or late
summer. Certain other trees showed little or no evidence of this
disorder. It was thought that, because filberts thrive best under
maritime climatic conditions of cool summers and mild winters, this
scorch was probably due to high temperatures accompanied by deficient
soil moisture.

This breeding work resulted in the introduction in 1951 of the Reed and
Potomac varieties, which were produced as a result of crosses between
the American filbert, _Corylus americana_, and the European filbert, _C.
avellana_. The original trees of these varieties had been under
observation for more than 10 years, and their performance had been such
as to indicate their suitability for home plantings under eastern
conditions. Furthermore, these varieties had shown little or no evidence
of scorch and had held their leaves well.

In early spring of 1948, an experimental orchard, consisting of 36
layered trees each of Reed and Potomac, was planted at Beltsville, for
the purpose of testing them more fully than had been possible before as
to their suitability for eastern conditions. The orchard was designed
also for study of their response in tree growth and fruiting to
differential fertilizer treatments. Although this experiment has been
underway now for only three years, certain of the findings are thought
to be of such importance that a preliminary report should be made at
this time.

Experimental Plan

The site selected for the orchard is a gentle slope varying from five to
15 percent and providing good air drainage. T