Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting: Rockport, Indiana, August 25, 26 and 27, 1952
Science
Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting: Rockport, Indiana, August 25, 26 and 27, 1952
Northern Nut Growers Association -- Periodicals; Nut trees -- Periodicals; Nuts -- Periodicals
MR. CALDWELL: I have read in several publications that hickories should
be stratified over the winter period before planting for spring
germination. I always find things a little bit different, so a year ago
at the greenhouse I took seven different sources of seed of shagbark
hickory, _Carya ovata_ and one source of _Carya ovalis_. Some of those
seeds germinated within three weeks from the time I put them in, and
after a month and a half I had a full stand in all cases. I don't think
that more than 2 per cent of the seeds failed to germinate. They were
planted in warm greenhouse, with a minimum of, about 68 degrees at
night and about 90 during the day. They were planted in a combination of
peat and garden soil; no special care other than water. I have had no
trouble since the seedlings have continued to grow, even though the
seeds were planted only two and a half inches deep. So it may be that
there is no need for stratifying hickories.
MR. O'ROURKE: Your experience is the exact duplication of Dr. Lelia
Barton's of the Boyce-Thompson Institute. She found that hickory seeds
germinated from three weeks, as you did, to a number of months, when put
in a warm greenhouse. Apparently the difference in time is related to
the thickness of the seed coat or possibly to an inhibitor in the
pellicle rather than to any need for after-ripening. I think that
Burdette in Texas also pointed out that thick-shelled pecans took longer
to germinate than thin-shelled pecans.
MR. PATAKY: If you take a nut of any kind and let it dry and plant it,
you will get quicker germination than if you plant it soon after
harvest. I don't see any difference in taking a nut and planting it and
stratifying it. If planted the rodents will get it, but if you put it in
something all winter, it will be there in the spring. I don't see any
reason for planting a nut in the fall, taking a chance of rodents
getting at them. If you plant them in the spring, they come up so much
quicker that the rodents don't have a chance to get at them. They got
nearly all of mine that I planted in the fall.
MR. HARDY: A good many nuts don't have any rest period requirements. I
think it probably is a matter of convenience as to the manner in which
they are handled. I have talked with nurserymen in the South. If they
get the nuts in the fall they may either plant them in the fall or
stratify them over winter and then plant them in the rows in the spring.
If they get them in the spring, they soak them for a day or two days in
water before planting. Perhaps the dry nut is slow in taking up moisture
direct from the soil, and they are primarily interested in getting a
uniform stand of trees so that they handle it in such a manner that all
the nuts will grow at the same time. And I believe many will agree that
a dry nut planted in the spring will show considerable variation as to
the time in which they appear above ground.
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