and black walnut in the same planting in the immediate
neighborhood--in fact, they crowd each other. That's a statement of
fact.

I spoke a little while ago of an old black walnut tree that had that
disease for a number of years and none other in that planting had it.

MR. O'ROURKE: Is there any correlation between the age of the tree and
the expression of the disease?

DR. McKAY: It's been our observation that we haven't had it in our
nursery to any extent. We have seen it in the nursery of J. Russell
Smith on Persian walnut. It, to my knowledge, is the only place where we
have seen it on nursery trees. It may be that our nursery happened to be
free of the inoculum, because it's been about a mile from the orchards.

MR. O'ROURKE: Would you by any chance think it might be seed borne?

DR. McKAY: We have no information on that virus.

MR. GILBERT SMITH: I have one statement to put in at this time. Dr.
Crane questioned whether the Japanese walnut should be grown. I wonder
if the Japanese walnut might not be a safeguard in the area where they
don't have the disease, in that you will detect the disease the quickest
on the Japanese walnut, and in that way anyone would become wise to it,
rather than if it was in the black walnut. It might be so insidious that
it could be well spread before persons knew they had it at all. I
wonder if the Japanese walnut, through its quickness in showing the
disease, might not be a safeguard to the other walnuts?

DR. MacDANIELS: That's a technique that's used with some other plants.

MR. CORSAN: I go on the principle that a tree that's well fed might not
resist every disease, but it will resist a great many diseases and most
of the diseases, if it's well fed. Now, the feeding of trees is very
important. I noticed that in going back and forth between Florida and
Toronto. I examine the pecan situation every fall and spring, and just
to think of Stuarts--you know the size of Stuart pecan--coming in good,
big crop of nuts that size (indicating with fingers). Can you see that?
And you know that is less than half the size the Stuart should be. It's
a great nut for cracking by machinery. In fact, a lot of people grow
nothing but Stuart. And last year they had such a crop. Last year I
pointed to a farm right near the highway. "Do you see that? For years I
have been trying to get you to put that sawdust, which is nearly 40 feet
high in a pile, around your pecans and see the vast difference in y