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Trenk, Fred B. (Fred Benjamin), 1900- / Forest planting handbook

Plantations for special products and purposes,   pp. 29-34 PDF (1.7 MB)

Page 29

        Plantations for Special Products and Purposes
  Trees are frequently planted for purposes other than lumber, pulp-
wood, or firewood. These include walnut groves, Christmas tree plan-
tations, and windbreaks Although the fundamental principles of for-
est planting apply to all such cases, there are certain modifications for
each which should be followed in order to secure best results. -
The Walnut Grove
  Walnut trees are adapted to the rich moist bottom lands in the
southern half of the state. They should never be planted on ridges or
dry slopes, because of the extremely slow growth they will make on
these unfavorable soils.
  In addition to the right kind of soil, the success of a walnut planta-
tion is influenced by two other factors-the planting of pre-treated
nuts or of seedlings not more than two years old, and a mixing of
the walnuts with other trees.
  Pre-treating consists preferably of controlled temperatures and
moisture treatment for 40 to 50 days before planting. Walnuts- which
are allowed to dry out over winter before planting in the spring will
germinate very poorly if at all. They may be carried over winter suc-
cessfully if they are mixed with an equal volume of moist sand, placed
in a shallow crate, and either buried about 15 inches in the ground or
covered out-of-doors with a compost of leaves or straw. The nuts may
also be stored in a cool, moist place untll about March 1. This should
be followed by, storage at a constant temperature of 36-38° F., in a
mixture of wet sand until about April 20, when they will be ready for
direct planting in the field or in nursery beds. This latter method is
practical when it is possible to use commercial refrigerator space,
and it has the advantages of complete temperature control, prevention
of loss by rodents, and the recovery of nuts which may have become
dried out when not stratified.
  If the nuts are to be planted in a garden seed bed, they should be
sown three inches apart in drill rows eight inches apart, in well pre-
pared soil. They should be planted about two inches deep and the soil
covered with burlap until the nuts germinate. The young seedlings
need no particular care, other than reasonable weeding, and watering
in case of extreme drought.
  The planting site in the field should be furrowed at six-foot inter-
vals. Not over 30 per cent of the trees planted should be walnuts. The
other trees recommended for planting with walnuts are ash, bass-
wood, sycamore, red or swamp maple, or American elm. They should
be planted as one-year or two-year old seedlings. Walnuts do not grow
naturally in pure stands, and the results observed in many pure plan-
tations set out in the past 25 years in various parts of the Mississippi
valley indicate that trees in a pure plantation do not thrive after they

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