SUPPLEMENT 
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Volume IX 
Madison, Wisconsin, April, 1919 
Number 8 
INSECT AND PLANT DISEASE CONTROL 
The purpose of this Supplement is to outline the methods used by orchard owners whose trees pay 
for themselves every year. The statement made recently by the manager of one of the big cherry or- 
chards of the state that “two-thirds of the cherry orchards in this country do not have a crop worth the 
cost of picking and never will have under the present management while the other third pay big divi- 
dends,” is equally true of the apple orchards of Wisconsin. Now is the time to decide that this year’s 
2 rop will be a paying instead of a losing venture. 
For the convenience of the many members of the Horticultural Society who possess home gardens, 
a brief discussion of the ordinary insecticides and fungicides is also being given. Every attempt is made 
to keep the recommendations up to the latest results of the experiment station and the most profitable 
practice of successful Wisconsin orchardists. 
Apple Spraying Program 
Fruit that Pays 
I. When the fruit buds show pink, spray with : 
Lime-sulpliur (commercial concentrated) 1M> gal. 
Arsenate of lead (dry, powdered) < l x /2 lbs. 
Cold water 50 gals. 
Note : See also the discussion of Bordeaux mixture in another 
column. 
II. About a week after the petals fall, spray with the same solution. 
III. Seven to ten days later repeat this spray. 
IV. During the first ten days of August repeat again. The lime 
sulphur may be omitted from this last application. 
Fifty gallons of the solution given is sufficient for eight very large 
trees, a dozen medium size, or about twenty just coming into bearing. 
The program given will not control plant lice. If these aphids are 
found on the buds half a pint of 40% nicotine sulphate is added to each 
fifty gallons of the spraying solution when the pink bud spray is ap- 
plied. 
This spraying program is primarily designed to protect apples 
from the codling moth, plum curculio, and apple scab but is also 
effective in controlling most other bud and fruit-infesting, or leaf- 
eating insects as well as certain plant diseases. The strong dormant 
spray recommended for early spring application in many states is 
usually not necessary in Wisconsin. It is not recommended unless the 
orchard owner knows oyster' shell scale or San Jose’ is present on 
his trees. 
By S. B. Fracker. 
Wisconsin’s orchard trees are 
ready to bear a million bushels of 
apples in 1919. After an “off 
season” they are prepared to 
come back and do their share to- 
ward satisfying fruit-hungry 
America. With the kind permis- 
sion of the weather man, several 
hundred thousand barrels of fruit 
will be hanging on the trees in a 
few weeks. 
Whether this apple crop will 
pay the cost of handling is the 
question uppermost in the mind of 
the average owner. Is the fruit 
going to be fit for market and 
will there be a market for .fit 
fruit? A few successful orchard- 
ists know their season will be 
profitable, because it always is, 
but to many of the readers of this 
supplement the apple crop ap- 
