2 
WISCONSIN HORTICULTURE SUPPLEMENT April, 1919 | 
Plums and Cherries 
The program for plums and cherries, is very similar to that for 
apples. The same formula (lime-sulphur and arsenate of lead) is 
applied, (1st) when the petals fall; (2nd) about two weeks later; 
and, if necessary, (3rd) just after cherry picking. As with apples 
Bordeaux mixture is sometimes preferred to lime-sulphur on account 
of the stronger fungicidal effect. 
40% nicotine sulphate may be added to either of these sprays on ac- 
count of aphids or plant lice. 
Outfit Needed 
For fruit trees one of three types of spray pumps is usually em- 
ployed, depending on the number of trees to be sprayed. These are • 
A complete, up-to-date spray outfit. Rags of this type are used in all large 
commercial orchards. 
bucket, barrel, or power. The owner may purchase whichever of these 
styles fits his purse and his orchard. With any of them there will 
be needed for large trees of bearing age thirty to fifty feet of five-ply 
rubber hose, extension rod, preferably eight feet long, fitted with cut- 
off, nozzle of the disk type, and angle, so that the spray may be di- 
rected downwards. 
INSECTICIDES FOR CHEWING INSECTS 
Arsenate of Lead 
Formula (1)— For orchard. 
Arsenate of lead — dry, powdered IV 2 to 2 lbs. 
Water 50 gals. 
Note. If the paste form of arsenate of lead is preferred, use twice 
as much. 
Formula (2) — For Home Garden Sprayer. 
Arsenate of lead — dry, powdered ¥2 oz. 
Water (preferably soapy) 1 gal- 
pears to be a gamble, and often a : 
losing one. 
The question, “Will your apples 
be ‘Fancy,’ ‘B Grade’ or ‘Culls’ 
when the returns come in this I 
fall,” can be answered within 
eight weeks, for the time to in- 
sure high quality fruit is in the 
early spring. The few fine sunny 
days of April and May are worth 
a hundred dollars a day to the 
owner of a five-acre orchard and 
only a small percent of the own- 
ers are cashing in on them. 
The difference between high 
grade apples selling for two dol- | 
lars a bushel, and worth it, and j 
“Culls,” selling at forty or fifty 
cents a bushel, and not worth that, 
is due almost entirely to three ; 
things: apple scab, plum curculio, 
and codling moth. Textbooks and 
treatises list many insects and di- 1 
seases of the apple but none need 
cause alarm in Wisconsin if these : 
three are kept under control. Fire 
blight and plant lice are occasion- 1 
ally serious but the three great 
factors in the production of fruit 
that pays are those named. 
Spraying 
The remarkable feature of a 
control program for the three big 
pests is its simplicity and cheap- 
ness. It requires only two spray 
materials, lime-sulphur and arse- 
nate of lead, altho the stronger 
fungicide, Bordeaux mixture, may 
be used, if desired. Both lime- 
sulphur and lead arsenate are pur- 
chased ready for use and are mix- 
ed with cold water. The elabor- 
ate utensils and great vats for 
boiling lime-sulphur figured in 
spraying discussions of a few 
years ago are no longer employed, 
for lime-sulphur is now seldom 
made at home. 
A few years ago one of the best 
known growers of alfalfa in Wis- 
consin decided to make the apple 
