In order to get as near to the work as possible get a long hose--from
twenty to thirty feet according to circumstances. The best quality,
three to five ply, is none too good. Hose should be three-eighths to
one-half inch in diameter, one inch being too heavy. Extension rods
are a practical necessity. They should be ten to twelve feet long and
made of bamboo lined with brass, that is, as light as possible.
Nozzles are very important in thorough and effective spraying. There
is no best nozzle, nor one with which all the work can be done.
Several things should be considered in selecting a nozzle. First of
all, it must be of convenient form so as not to catch in trees and so
constructed that it will not clog easily. Second, for apple trees it
should have good capacity and deliver as spreading a spray as
possible. Third, the nature of the spray is very important.
Insecticides should usually be applied with force in a comparatively
coarse driving spray, but fungicides should be applied in a fine mist
or fog so that they will settle on every part of the tree. Therein
lies the difficulty of applying insecticides and fungicides together.
TIME OF SPRAYING.--Fortunately it is not necessary to make a separate
application for each insect and disease, but they may be treated
together to some extent. In most cases expediency demands that the
arsenicals be used with the fungicides. Many growers are finding the
most satisfactory results, however, from applying the arsenical spray
separately, just after the blossoms fall, because of the physical
impossibility of properly applying the two sprays--the driving and the
mist spray--together. For most practical purposes on the general farm,
three sprayings are necessary in order to secure clean fruit and four,
sometimes five, are often advisable. These may be summarized as
follows:
1. With lime-sulphur, winter strength, on the dormant wood in
early spring.
2. With lime-sulphur and arsenate of lead just before the
blossoms open (may sometimes be omitted).
3. With the same (or Bordeaux for scab) just after the blossoms
fall.
4. With the same two or three weeks later.
5. With arsenate of lead eight or nine weeks later (may
sometimes be omitted).
(In the south and middle latitudes where bitter rot and apple
blotch occur two other sprayings may be necessary.)
6. With Bordeaux about eight or ten weeks after the blossoms fall.
7. Again with the same about two weeks later.
A Calendar for Spraying Apples
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