NEw York AGRICULTURAL EXPERIMENT STATION. 145 
One of middle two unsprayed rows, 12834 lbs. marketable tubers. 
Yield, sprayed, 90 bu. 9 lbs. marketable tubers per acre. 
Yield, unsprayed, 59 bu. 20 lbs. marketable tubers per acre. 
Gain, 30 bu. 49 lbs. marketable tubers per acre. 
The yield of small and rotten tubers was 39% bushels per acre 
for the sprayed and 34% bushels per acre for the unsprayed. 
Test No. 2. Sod ground. . 
Second sprayed row on the north, 176% lbs. marketable tubers. 
Second sprayed row on the south, 131 Ibs. marketable tubers. 
Average of two sprayed rows, 1535 lbs. marketable tubers. 
One of the middle two unsprayed rows, 75 lbs. marketable tubers. 
Yield, sprayed, 70 bu. 47 Ibs. marketable tubers per acre. 
Yield, unsprayed, 34 bu. 34 lbs: marketable tubers per acre. 
Gain, 36 bu. 13 Ibs. marketable tubers per acre. 
The yield of small and rotten tubers was 50 bu. 10 lbs. per acre 
for the sprayed and 26 bu. 44 lbs. per acre for the unsprayed. 
Combining the results obtained in the two fields we have an 
_average gain of 33 bu. 31 lbs. marketable tubers per acre. This 
is a comparatively small gain, but when the size of the yields is 
taken into consideration the showing made is a good one. Spray- 
ing increased the yield 71.4 per ct. At the time of digging the 
test rows the market price of potatoes in Utica was 75 cents per 
bushel. This makes the value of the increase $25.14 per acre. 
Subtracting $4.31, the cost of spraying, there is left a net profit of 
$20.83 per acre. , 
The loss from rot in this experiment was considerable and it 
was certainly greater on the sprayed than on the unsprayed rows. 
An explanation of this is given on page—. Had. there been no 
unsprayed rows for comparison many would have pronounced the 
‘spraying a failure, while as a matter of fact it was a decided 
success, 
THE VERONA MILLS EXPERIMENT. 
This experiment was made by F. G. Rathbun, Verona Mills, 
Oneida county. Eleven acres of potatoes, in two fields, were 
sprayed five times. One field contained seven acres and the other 
four. In both, the variety was Green Mountain. The dates of 
spraying were as follows: June 24-29, July 12-15, July 24-31, 
August 9-14 and August 19-22. Poison was used with the bor- 
deaux in the first three sprayings. Some unsprayed rows were 
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