CHE REFERENCE LIBRARY - Pole Shift Survival Information

214 T?1E ,VliR,SERY-AIri NlJAL
Tht W& mr~ltipli~~s with marvelous nr.pidit.y, there being
three or four broods annually, allcl eac4i mother scale may
give birth to several hundred
l .h, .,
yNll1g. The young are born
alive and breeding continues until
Intc! allt.111~1 II. The snizlll halfgrown
bIa& SC&~ are resista,nt
to GYM wea,tIier a,nt I many of
them hibt~rnatc safely.
(‘orzfrol. --- San Jo& scale can
be coi~troIIed by spraying with
linle-sulfur solution 1 to 8 in the
aut.umn or spring while the plants
are dormant. Uons or cuttings
reclei ved 1)) nursery-men from
a’nother locality should be fumigated
with hydrocyanic gas before
they are used in order t.o prevent
Frc;. 225. St111 JO& sritlc. the introduction of the scale.
T!lE PEAR SLW. - This insect (I:‘rioctl,~l~1)~)1’~~~~ lin~~ci~)
attacks the foliage of pear, cherry, quince and plum. In the
North the small oval eggs appear on the foliage as blisters
about the middle of 1Ia.y. About two weeks later the eggs
ha,tch and the dark green Iarvc713 appear on the upper side of
tI1e Ie:rf. The larve are covered with a sticky slime and have
the appearance of small snails. The body is swollen in front
and tapers beI~ind like a tadpole (Fig. 2%). There may be
two or t.hree broods in the summer.
The larxe feed on the upper surface of the leaves, eating
only the epidermis and lea,ving the skeleton of veins and the
lower epidermis to turn brown and wither. Badly injured
leaves fall and trees in the nursery may be entirely defoliated
by midsummer.