symptomless carriers, that is, in terms of the lack of
expression of virus growth and this bunchy condition on them.

Really, we feel that all people that are interested in the walnuts and
that are trying to grow them should make careful observations on these
trees to study just what the situation is, how it develops, and note the
performance of these trees that become diseased; because we feel that
it's a much more serious thing than people appreciate at the present
time.

In much of Eastern Shore Maryland and of the area around Washington and
Beltsville and over in Virginia, a great majority of the trees are
affected by it, particularly Japanese walnuts of all types and the
butternuts. I feel it is so bad on Japanese walnuts and butternuts that
they shouldn't be propagated in the area.

MR. McDANIEL: I had the bunch growth developed on a new species this
year in my planting in north Alabama, a 12-year-old tree of ~Juglans
rupestris~. It is a growth that looks practically the same as the bunch
disease on the Japanese walnut. I believe that's the first time it's
been observed on that species. There are no butternuts or Japanese
walnuts on the farm. There are dozens of black walnuts (seedlings and
several varieties) none of which show the bunch symptoms. However, it is
typically developed on some Japanese trees a few miles away.

At Whiteville, Tenn., Dr. Aubrey Richards has a suspicious looking tree
among some two year old seedlings of ~Juglans major~ from Arizona seeds.

MR. CHASE: I'd like to add to that, too, Mac. In our walnut arboretum we
had some ~rupestris~, and I had been suspicious of its being diseased for
a number of years. I finally have decided that it had the bunch disease,
and those trees down at Norris have all passed out.

MR. McDANIEL: My tree came from Norris, 10 years ago.

DR. MacDANIELS: ~Juglans rupestris~ killed by the disease.

MR. STOKE: Just because this is a little contradictory to what you have
heard, I want to say that my experience has been this: I have an old
nursery--well, there is a butternut in the row and also heartnut--Japs.
One of those Japs has had the bunch disease for six or eight years. None
of the others has been affected. It was a variety I wanted to
perpetuate. I took an apparently healthy scion from that and put it on
another tree, and that grafted tree also had the disease. But there has
been no evidence of contagion from this Jap to the other Japanese,
butternuts