New York AGRICULTURAL EXPERIMENT STATION. 827 
: GENEVA EXPERIMENTS. 
PLAN. 
The tests were carried on in the Industry plantation of the 
Van Dusen Nursery Co., near Geneva. During the past few sea- 
sons the attacks of mildew here were so severe that the crops were 
destroyed and many bushes had been either killed outright or so 
badly weakened that they were winter killed. The part of the 
plantation used for this work contained 28 rows, 20 bushes to 
the row. 
The general plan of the work in this plantation was much like 
that for the work done at Trumansburg. The principal new 
” with several fungicides. ‘This 
feature was “winter spraying 
was for the purpose of determining whether or not it would prove 
practical to spray with strong solutions while the bushes are 
dormant. The object was to compare the results obtained from 
bushes given the winter treatment and sprayed throughout the 
season, with results from bushes where spraying was begun early, 
medium early and late; also to compare soda-Bordeaux and cop- 
per carbonate solutions with potassium sulphide as a preventive 
of the disease. 
WINTER TREATMENT. 
The severe weather of winter and early spring prevented the 
application of this treatment until April 5, but as the buds re- 
mained perfectly dormant all that time this date was satisfactory 
for the test. Each one of the following solutions was applied to 
a separate row of bushes: 
Copper sulphate, 1 oz. to 1 gal. water. 
Potassium sulphide, 1 oz. to 1 gal. water. 
Iron sulphate, saturated solution, 5 pounds to 1 gal. water, 
plus 1 per cent of sulphuric acid. 
*Soda-Bordeaux mixture.— 1pound copper sulphate, 1-3 pound 
lye, to 5 gals. water. 
1A modification of Dr. Halsted’s formula, as given in Nineteenth Report 
New Jersey Exp’t Station, p. 336, 
