trees take on an alternate year bearing habit that could be
caused from injury, insect or disease damage, or the relocation of plant
food. The nut trees on their own roots should do better than when
grafted or budded. The compatability of stock and scion is yet to be
worked out and any constriction at the union may alter the fruiting
habits.

The possible sources of pollen for hickory and pecan are from
self-fertile trees, seedlings, and various natural crosses that may or
may not produce edible fruit. The walnut family, which includes the
black and Persian or Carpathian walnut; butternut and Asiatic nut
(heartnut) have been used as pollinizers on the Persian walnut with some
success. The butternut is the first to shed pollen in Indiana with the
catkins dropping, in some years, by late April and the first week in
May. Some years the black walnut has produced the peak pollen from May
5th to 12th but during the spring of 1953 the Thomas, Stabler, Rowher,
Ohio and Stambaugh dropped the pollen from May 18th to 22nd. The Asiatic
walnuts were in full bloom on May 14th and 15th. The above dates do not
correspond to observations of other years, except for the butternut. The
pistillate flowers on the Persian walnuts were fully opened by May 16th.
The catkins of the Persian trees had dried by May 12th. Catkins from the
Asiatic walnuts were kept fresh and distributed throughout two Persian
walnut trees and by mid-afternoon a heavy rain came. On May 18th a few
catkins were again removed from the Asiatic walnut and only enough for
one Persian walnut tree were found and hung in the tree. The first tree
has no fruit while the second tree has a fair crop in the making.

A letter from H. F. Stoke, Chairman of the Survey Committee on the
blossoming dates of the Persian walnut said: "Payne, Lancaster and
Broadview staminate flowers were out on April 9, 10 and 11. The
pistillate flowers of McKinster, Caesar and Crath #1 were receptive on
April 11, 10 and 10." The above dates were over a month before spring
came to Indiana. Whether or not the Stoke varieties in Virginia would do
the same in Indiana or elsewhere is still the problem.

The black walnut varieties mentioned previously set very few fruits at
Lafayette this year while a promising new variety, Sol, from Ferd
Bolten, Linton, Indiana, has a full crop, and has been a consistent
producer for the past several years.

How Many Pounds per Tree

Throughout the Middle West the elm,