CHE REFERENCE LIBRARY - Pole Shift Survival Information

CERTAIN ELEMENTS IN NURSERY PRACTICE 211
The nodular swellings or aphis galls are especially common
on the roots of nursery stock. The woolly aphis is known to
entomologists as Schiwnc2dra Zmigera.
cht?d. - The woolly aphis appears first in summer on the
trunk and branches aboveground and it can then be readily
controlled by drenching the woolly colonies with 15 per cent
kerosene emulsioli. The treatment should be made as soon
as the aphids appear, and this will prevent many of them from
migrating to the roots.
oval-shaped, reddish
are usually found on
live under the pro-
the spring. sprtl,vil~g the hibernating J?rc:. g;raW;h;ft;r;
eggs while the tree.-; art’ dormant with x~‘t~;tlme& 37I
.
. L .
lime-sulfur solution 1 to 9 will prove
d-b&W. T!;e red-spider (Tetranychus) hibernates throughout
the winter iu the ground and crawls baScl; to the foliage in