rs like the Rhodes.

Scab Disease in Eastern Kentucky on the Busseron Pecan

W. D. ARMSTRONG, _University of Kentucky, Princeton, Kentucky_

MR. ARMSTRONG: Mr. Chairman, ladies and gentlemen: It is nice to be here
at the Northern Nut Growers meeting. This is my second session. I attend
all the pecan and nut sessions in the country. I have attended
Georgia-Florida Pecan Growers Association and Oklahoma and Texas Pecan
Growers Association.

These plates that I have contain some of the Busseron pecans affected
with pecan scab. The disease has shown up in Southeastern Kentucky,
about a hundred miles southeast of Lexington, a hundred miles west of
the Virginia line, and about a hundred miles north of the Tennessee
line, on a straight line west of Roanoke, Virginia.

These trees were planted in bottom soil, rather well drained, and they
made a rapid growth. In the original planting there were two Green River
pecans, one Major, one Busseron and two walnuts, a Stabler and a Thomas.

About 1946 we noticed that all of the pecans on the Busseron were like
these that we have here--did not mature, completely covered with scab
fungus and dropped off the tree. The shells were so thin that you could
just crush the whole pecan, hull, shell and all with no meats in them.
The Major tree right beside it and the two Green River trees had none of
this trouble, and they have none of it as yet. And each year now that
this Busseron tree has borne there, practically all of the nuts have
been like this.

At the time we located this disease first in 1946, I sent samples to the
U.S.D.A. at Washington and also to the Southeastern Pecan Laboratory at
Albany, Georgia, and Dr. Cole, there identified it as pecan scab.

I reported the presence of the disease to Mr. Wilkinson and to Dr. Colby
and they were surprised to see the disease on Busseron in any location,
and particularly that far north.

In the south this disease frequently affects Schley, Delmas, Alley and
Van Deman and some others. Formerly the trees were sprayed with Bordeaux
Mixture. I think they are using Zerlate now. It's a problem to be
reckoned with. It occurs on the nuts and on the leaves, and it is
carried over winter on the stems and the one-year shoots.

Further News About Oak Wilt

E. A. CURL, _Illinois Natural History Survey, Urbana, Ill._

In 1951 a review of the oak wilt situation was given in a paper,
"Present Status of the Oak Wilt Disease", at the F