CHE REFERENCE LIBRARY - Pole Shift Survival Information

PROPAGATION BY MEANS OF SEEDS
AND SPORES 55
“The seeding-trough is a device for holding the
seeds. It is 8 inches deep, rounded slightly on
the bottorll and up one side, from 10 to l-1- in&es
wide, 3rd 5 feet long. It is mounted on legs,
raising it from 16 to 2-I iiichs Aove the ground.
‘J’he trougli is set to straddle a
seed-bed in which drills have
been made, as indicated in the
illustration (Fig. 34).”
The beds are provided
with protection against winds,
rodents, birds, sun and winter
cold, by means of windbreaks
and divers coverings and
screens. ,Some of these are
shown in Figs. 35-35. The
seedlings are given careful
\ attention in shading, water-
I ,’
ing, weeding, tilling, winter
mulching an d otherwise.
Y~llllg seedlings are shoxn
Rd. 39. Conifer
lings.
in Fig.
‘, :
1 1’: :N. .I very long and undesirable tap-
‘.4 \
’ root sJWerii is illustrated in Fig. 40.
! ,’
j s
I n, This development is sometimes correc$t*tf
!q root-priuliiq in the nursery
:\ I
Led by means of a knife thrust under
l
j 1~: ,’
*
the plants. Fig. 41 d10w a specially
1
good development. of a season’s growth
\
- _ as a result of fail seeding, whereby the
FIG. 4U. SCNI- plant gets an early start in spring.
ling of western
Stock larger by one-half inch to two
yellow pine.
inches can be produced in one year by
fall than by spring sowing. The increased growth may
mean the shortening by a year of the length of time
necessary for growing stork to a size suitable for field
planting.
Forest nurseries operate with such numbers of
plants, wlkh must be cheaply produced, and the
species involved in the processes are relatively so
few, that highly standardized methods soon arise.
seed-
FIG. 41. Douglas
fir seedling,
from fall-sown
seed.