This so
cooled my enthusiasm and hopes for a black walnut orchard that I ceased
experimenting with them except to try out new varieties being discovered
through nut contests carried on by the Northern Nut Growers'
Association. The 1926 contest produced a number of black walnut
possibilities, among them being such named varieties as the Rohwer,
Paterson, Throp, Vandersloot, Pearl and Adams.
The neglected and over-grown walnut seedlings now began to serve a
useful purpose in grafting the new varieties which I obtained for
testing in this locality. These were propagated by obtaining scionwood
from the originators of the variety and grafting it on these seedling
trees. My technical knowledge had increased by this time to such an
extent that I was usually certain of one-half of the grafts growing. The
behavior of the Rohwer and Paterson in 1937 invited nursery propagation
on a greater scale than did other better-known types, because of their
qualities of hardiness and earlier-ripening.
In the spring of 1937, these native seedlings were again offered to the
spirit of propagation, when a large part of the scionwood of English
walnuts I had imported from the Carpathian mountains of Poland was
grafted on them.
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