80 RESULTS PROM SPRAYING 
sulphur and stir. Continue to add sufBcient water to keep the lime slak- 
ing, but not enough to completely cover it. When the hme has slaked, 
add 10 or 15 gallons of water and boil over the fire for three-quarters of 
an hour. As it cooks, the solution should take on a dark reddish or 
greenish orange color. This is the sulphur going into solution. When 
through boiling, dilute to 50 gallons, and strain before transferring to 
the spray tank. The straining is to prevent the small particles of grit 
and trash clogging the nozzles. 
A steam boiler may be used instead of an open kettle. Slake the lime 
in a barrel, add the sulphur and water as above. Steam may be carried 
into the barrel by a rubber hose or, preferably, an iron pipe, which should 
extend down into the liquid. The top of the barrel should be covered with 
heavy sacking to prevent too rapid escape of the steam. The mixture 
should be boiled in this way for three-quarters of an hour. This is con- 
sidered the best wash for San Jose scale and other scales, and should be 
applied thoroughly to all twigs and branches, covering the entire surface 
thoroughly. Although lime and sulphur is best known as a contact spray 
for winter use on San Jose scale and other pests, it is also very efficient 
for peach leaf curl. 
A number of companies also make a concentrated solution, which is 
usually sold in barrel lots, and should be diluted, 1 gallon to 8 or 11 gallons 
of water for wnter use, depending on the strength of the stock solution. 
It can be purchased from Sherwin-Williams Paint Company, Cleveland, 
Ohio; Grasselli Chemical Company, Cleveland, Ohio; Rex Company, 
Toledo, Ohio; and Niagara Company, Middleport, New York. 
"Scalecide" is a miscible oil. It requires no preparation, but is used 
at the rate of 1 gallon of "Scalecide" to 15 gallons of water. It is easy to 
use, and is especially good where an old orchard is badly infested with 
scale, as the oil has a tendency to spread or "creep" into all the little 
cracks and crevices of the bark. Made by B. Q. Pratt Company, Nev/ 
York. 
Results from Spraying 
Returns Increased 200%. 
Value of fruit from unsprayed tree $1 .90 
Value of fruit from sprayed tree 5 . 70 
Cost of spraying H 
From Virginia Experiment Station Bulletin No. 181. 
Percentage of Infected Leaves — Elberta Peach. 
2.589 leaves Unsprayed, 16.87 % curled leaves 
3,005 leaves Fall sprayed. .016% curled leaves 
2.814 leaves Spring sprayed, .050% curled leaves 
From Cornell Experiment Station Bulletin No. 31. 
Spraying Increases Probts. 
"The net profit from spraying an average-sized tree from 12 to 20 years old 
throughout one season, at a total cost of 30 to 50 cents, is S3 to $7 or more, when 
apples are worth $1 per bushel." — Ohio Experiment Station Bulletin No, 191, 
Results with Ben Davis Apple Trees. 
Unsprayed, 42.5% wormy. Sprayed twice, 1.46% wormy, — From Ohio Ex- 
periment Station Bulletin No, 95. 
V 
