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 use...
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
--------+--------+--------+--------+--------+-------+---------+----------
INSECTS Nature Before Before After In 2 In 8 Materials
of Leaf Flower Petals to 3 to 9 to
Injury Buds Buds Fall Weeks Weeks Use
Open Open
--------+--------+--------+--------+--------+-------+---------+----------
Codling Eating x x x Lead
Moth Worm Arsenate
or
Par. Gr.
--------+--------+--------+--------+--------+-------+---------+----------
San JoseSucking x Lime
Scale Insect Sulphur
--------+--------+--------+--------+--------+-------+---------+----------
Oyster Sucking x Lime
Shell Insect Sulphur
Scale
--------+--------+--------+--------+--------+-------+---------+----------
Blister Leaf x Lime
Mite Miner Sulphur
--------+--------+--------+--------+--------+-------+---------+----------
Plant Sucking when seen Whale Oil
Louse Insect Soap or
Tobacco
--------+--------+--------+--------+--------+-------+---------+----------
Cigar Eating x x x Lead
Case Insect Arsenate
Bearer or
Par. Gr.
--------+--------+--------+--------+--------+-------+---------+----------
Apple Eating x x destroy fruit Lead
Maggot Worm Arsenate
or
Par. Gr.
--------+--------+--------+--------+--------+-------+---------+----------
Bud Eating x x x Lead
Moth Worm Arsenate
or
Par. Gr.
--------+--------+--------+--------+--------+-------+---------+----------
Curculio Eating x x Lead
Worm & Arsenate
Beetle or Par. Gr.
--------+--------+--------+--------+--------+-------+---------+----------
=Diseases=
--------+--------+--------+--------+--------+-------+---------+----------
Apple Fungus x x x x if Lime
Scab necessary Sulphur
or
Bordeaux
3-3.50
--------+--------+--------+--------+--------+-------+---------+----------
New York Fungus x? cut out Lime
Apple infections Sulphur
Tree
Canker
--------+--------+--------+--------+--------+-------+---------+----------
Leaf Fungus x x x Lime
Spot Sulphur
--------+--------+--------+--------+--------+-------+---------+----------
Sooty x x x Bordeaux
Blotch Mixture
and Lime
Sulphur
--------+--------+--------+--------+--------+-------+---------+----------
Share this guide
Help another gardener grow something good.
Related guides
Legumes
In general, legumes are more valuable as cover and green manure crops than non-leguminous plants, because as a rule they are more rank growers and more deeply rooted, as well as because they add nitro...
Lime-sulphur
The more important fungicides, the commercial lime sulphur and the self-boiled lime-sulphur, are practically superseding Bordeaux as a fungicide, not because they are necessarily better, but because t...
Location
Having decided that under certain conditions the planting of an apple orchard will prove a profitable venture, and having ascertained that those conditions prevail on your farm, the next step will be...