410 Report or THB HORTICULTURAL DEPARTMENT OF THB 
not hit in the center by the spray and of course these escaped 
injury. 
Effect of the spray on the open blossoms.—The trees sprayed in 
bloom May 19 were examined May 24. At that time there was 
apparently but little injury from spraying the open blossoms but 
on June 5 these trees and also those which were sprayed in bloom 
May 24 showed great numbers of clusters in which part or all 
of the blossoms had died from the effect of the spray. This 
injury could be readily recognized when the trees which had 
been sprayed in bloom were compared with corresponding trees 
not so treated. 
With the assistance of Mr. Gardner the following estimate was 
made of the amount of bloom on the trees under test. 
Twenty Ounce all very heavy. 
Tompkins King all very heavy. 
Roxbury Russet sprayed in bloom; one light, one heavy. 
Roxbury Russet not sprayed in bloom; one light, one medium. 
Rhode Island Greening sprayed in bloom; both very heavy. 
Rhode Island Greening not sprayed in bloom; two light, twe 
very heavy. 
Mr. Gardner reported June 29 that there was practically no 
difference in the drop of fruit from the two lots of trees under 
test; all were holding the fruit well. During the summer the 
foliage remained healthy and the fruit fair and free from scab or 
other disease. The Twenty Ounce fruit was somewhat russeted 
from the effect of the spraying in bloom. An inspection of the 
trees of this variety August 17 showed but little if any difference 
in the amount of fruit on trees sprayed in bloom and the trees 
not so treated. On the other hand there seemed to be decidedly 
less fruit on Roxbury Russet trees sprayed in bloom than on the 
corresponding trees which did not receive this treatment. The 
same was true of R. I. Greening. On Tompkins King, the spray- 
ing in bloom also seemed to have thinned the fruit somewhat. 
In October, when the fruit was picked, there was so little. 
fruit on any of the Roxbury Russet trees under test that it was 
of no use to keep the record of the yield. Through an oversight 
