20 
The Colorado Experiment Station 
for we have no remedy, save a plow, when it has become once 
established. Spraying will prevent the disease. 
Control Measures. 
For the past two years we have been carrying on spraying 
experiments at Loveland, Colorado, in an effort to control the 
Sphaerelia injury. In this work 
we have used an adhesive bor- 
deaux mixture composed of 3 
pounds of copper sulphate (blue- 
stone), 2 pounds of stone lime, 
and 50 gallons of water (3-2-50) , 
to which 2 pounds of rosin fish 
oil soap were added as a sticker. 
In 1913, the first application 
was made May 29th. at which 
time the new canes were from 8 
to 12 inches, high; the second 
spraying was made on June 12th, 
and it was our purpose to give a 
third application about June 26th, 
making the three treatments ap¬ 
proximately two weeks apart, 
but because of continued rainy 
weather, it was impossible to get 
into the patch with a spraying 
outfit, so this had to be aban¬ 
doned. The berries were begin¬ 
ning to ripen by the time the 
ground had dried off, and noth¬ 
ing more was done until the pick¬ 
ing season was over and the old 
canes were all removed. On 
August 18th, a final application 
was given, to carry the bushes 
into fall and winter in a protected 
condition. At this time, scat¬ 
tered here and there through the 
patch were a few canes with one or two brown splotches, but 
nowhere nearly as numerous as in unsprayed plantations. In 1914, 
sprayings were made as follows, on the same patch : June 4, June 
22, and August 18th. This time, the late June spraying was pre¬ 
vented by the very early ripening of the berries, it being deemed 
