h Mr.
Bernath, however, that it will reduce the crop for two or three years.

MR. BERNATH: Yes, but he should start pruning when the tree is young. A
tree is just like a child: you have to start to train them while they
are young.

MR. STOKE: You must consider the tree at all ages. In the young tree Mr.
Bernath is right, it will produce sooner if you leave all the leaves on.
But we must consider the mature tree. The branches that are low to the
ground have to have the sunlight and if they do not get it they become
practically barren during later years. If the lower branches are cut
back when they are young and the tree headed higher, the Persian walnut
will have a trunk, say, 10 feet to 14 feet to the first limb, but these
will produce walnuts ultimately. I think the gentleman is right in
having the tree pruned high enough to walk under, and he will get more
nuts in the long run than if he lets the lower limbs develop and then
eventually cut them down.

DR. MACDANIEL: We had an example of that with that huge black walnut tree
with black walnuts starting out 30 feet in the air arching down and
touching the ground. But you wouldn't want to do that immediately with a
young tree, take all the branches up so high.

A MEMBER: Do you have any control for the stink bug on filberts?

DR. MCKAY: We haven't worked with the control of stink bug, because it
is what might be classed as one of our minor problems. The damage is not
so great but what we can overlook it at the present time.

DR. CRANE: In pecan and almond growing in California the effective
control measure for stink bug is the elimination of the host plants on
which the stink bug breeds. Peach growers have the same problem. Stink
bug will, if allowed to multiply in a peach orchard, ruin the peaches,
making injuries very similar to that caused by the plum curculio. The
only satisfactory method of control of stink bug injury is to eliminate
the host plants on which they live, such as most legume plants,
blackberry briars and other brambles. In an orchard, in a grass sod,
stink bug is no problem, but where we have soy beans or cow peas or
something like that growing in the orchard, or we have blackberry briars
or wild raspberries nearby, stink bug is a bad problem.

DR. GRAVATT: I have filbert trees, and the stink bug gets practically
all the nuts. The entomologists looked into the situation, and the
condition that Dr. Crane mentioned was borne out. If there are
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