ier in the fall than do other types of English walnuts.
Between the Cascades and the Rockies is a vast area part plateau and
part mountains. It is scarred with deep canyons and crossed by swift
streams fed from springs and mountain snows. Roughly the elevation of
farm lands varies from five hundred to over forty-five hundred feet.
Depending largely on slope and elevation, rainfall varies from about
eight to twenty-five inches. In general, summer days are bright, dry,
and fairly hot. Nights are clear and cool. Winters are unpredictable but
always vary much according to location and elevation. Infrequently
temperatures may drop to more than twenty below zero at Clarkston. Other
areas of similar elevation may be five to ten degrees colder.
For the sake of clarity and to reduce the territory covered, we will
confine ourselves largely to that part of the Columbia Basin irrigated
and to be irrigated in Central Washington. The application is general,
however.
Grand Coulee Dam has made feasible the irrigation of about 1-1/4 million
acres of sage brush, bunch grass, and marginal wheat lands. Irrigation
is already practised over other vast acreages. This land is level to
rolling, and is of sandy loam nature. It is deeply under-laid by layers
of lava rock--in places thousands of feet thick. As in most arid
climates the soil is rich in minerals but low in nitrogen and organic
matter. Under irrigation production is amazing. The growing season is
sufficiently long for Carpathian walnuts anywhere in the irrigated area.
Walnuts originally from Southern Europe have proved unsatisfactory
because they killed at 20 to 25 below zero. It was discouraging to have
a ten or fifteen year old tree killed outright by an unusual winter. But
it was just these conditions that led to the discovery of the Schafer
walnut. This tree survived the winters of 1936 and 1937 in a part of the
Yakima valley where all other varieties similarly located were killed.
So far as I know, none of these were Carpathians.
Many Carpathians are now being planted, mostly for yard trees, but
promise to eventually become one of the big commercial crops of the
area. However, skepticism on the part of the public and scarcity of
nursery stock has delayed commercial planting. A fair portion of good
growers are now convinced that commercial growing is profitable and
stock, our own and others, is becoming more plentiful.
Our experience has been confined largely to the Sc
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