Northern Nut Growers Association Report of the Proceedings at the Fifteenth Annual Meeting: New York City, September 3, 4 and 5, 1924
Science
Northern Nut Growers Association Report of the Proceedings at the Fifteenth Annual Meeting: New York City, September 3, 4 and 5, 1924
Northern Nut Growers Association -- Periodicals; Nut trees -- Periodicals; Nuts -- Periodicals
The sprout to which I have just called attention is not an isolated
case, but merely one of the most pronounced that I know about. In a
careful survey in July (1924) of the region immediately surrounding the
sprout just mentioned two or three other notable, but less pronounced,
cases of a similar sort were discovered. In two cases fine looking
branched sprouts some twenty feet high with healthy-looking foliage were
noted. Both were diseased but the disease seemed not to be very
conspicuous or virulent. In a recent survey of woodland in Rhode Island
(July, 1924) much healthy foliage was observed and several large sprouts
were found on which the disease (although present) seemed to be doing
little damage when compared with its former virulence in the same
general region.
I call attention to these cases primarily to acquaint you with the
results of our latest observations on what seems to me to be cases of
gradually developing resistance in some of the remaining sprouts. In all
my intensive work on the blight between 1907 and 1913 I cannot now
recall a single instance where a chestnut sprout in a disease-ridden
area ever reached a diameter of an inch or thereabouts before its
existence was cut short by the blight; and yet today--a dozen years
later--we are finding quite a number of living sprouts over two inches
in diameter, and a few that are three, four, and even up to seven inches
in diameter. Last Friday, August 29, I heard of a small chestnut tree in
New Jersey that bore a few burs last year and which has a dozen or more
this year. If the nuts mature we hope to get some of them to propagate.
Last Sunday, August 31, I saw a three inch sprout in Connecticut that
had had a few burs on it. I would be glad to learn of any cases of this
sort that may come to your attention.
You are all thinking men and women and all of you have had experiences
with diseased trees of some sort, many of you with very serious
diseases, and some of you I know have had a wide experience with the
chestnut blight, so you can draw your own conclusions as to the
significance of the facts that I have stated.
As to the state laws for transporting material from one state to another
I am not posted, but I believe that we can be advised by writing to the
government at Washington.
DR. MORRIS: We do not know whether the Washington government will
sterilize those scions and send them out for us, but there should be
some way of sending from one state to another.[B]
It seems to me that in all probability, the vital energy of the
protoplasm of the endothia is diminishing. Quality, flavor, or anything
you please, is bound up with certain vitality, and that diminishes and
finally will cease. That is the reason for the endothia growing less
now.
PROF. COLLINS: My point was perhaps not exactly that. I meant that the
result is that, with the average cases, we are now getting chestnuts not
so quickly destroyed. The explanation may be exactly what you have
stated.
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