206 Report oF THE DEPARTMENT OF ENTOMOLOGY OF THE 
FALL SPRAYING WITH SULPHUR WASHES.* 
P. J. Parrorr anp F. A. SIrRIne. 
SUMMARY. 
This bulletin contains the details of the first year’s experi- 
ment by this Station to determine the effects of fall applications 
of various sulphur washes upon fruit and leaf buds, and the 
comparative values of these sprays for San José scale treatment. 
The tests were made upon standard varieties of fruits in orchards 
located at Queens and Geneva. The important results are as 
follows: 
In Orchard I, which was free of scale, the applications caused 
a diminution in the amount of bloom and foliage of peaches and 
plums, which varied according to the spray employed, the lime- 
sulphur wash proving the least destructive. With the advance 
of the summer there was a marked increase in the quantity of 
new growth and foliage upon these trees. The unsprayed peaches 
produced normal yields of blossoms and leaves. The maturing 
of the fruit was accompanied by a decline in the condition of 
these unsprayed trees and many of them failed to survive the 
summer. The unsprayed plums produced a small crop of fruit 
and made an abundant new growth. With the exception of the 
fruit yields there was ultimately very little difference in the 
appearances of the sprayed and unsprayed plums. 
In Orchard II, which was infested with scale, the plums lost 
from 10 to 50 per ct. of their blossoms and had slight injuries to 
the leaf buds upon the lower branches. Morello cherries suffered a 
loss of 5 per ct. of the blossoms. Apples and pears were affected in 
the same degree. Crabs bore a full crop of fruit and foliage. 
Trees much infested with the scale, especially the plums, were 
usually severely injured or killed by the winter. 
In Orchard III, which was infested with scale, there was no 
apparent reduction in the blossoms and leaves upon the moder- 
*Reprint of Bulletin No. 254. 
