New York AGRICULTURAL EXPERIMENT STATION. 97 
of poison are required to keep the Colorado potato beetles, or 
“bugs,” under control. -In this particular experiment it was 
necessary to use paris green twice on the unsprayed rows to kill 
“bugs.” Probably this could not have been well done for less 
than 50 cents per acre for each application, or $1 per acre for two 
applications. In fairness, this $1 should be deducted from the $6, 
leaving $5 as the extra expense per acre due to spraying. 
The increase in yield per acre due to seven sprayings was 12314 
bushels, having a value of $61.75. Allowing that the extra ex- 
pense of the seven sprayings was $13 per acre, there is left a net 
profit of $48.75 per acre. 
At Riverhead.— In the experiment at Riverhead the Station 
had an agreement with Mr. Sirrine to pay him for all expense of 
the spraying, labor being rated at 20 cents per hour. Mr. Sirrine’s 
bill for labor and chemicals was $2.42 for the three sprayings of 
series I and seven sprayings of series IJ, making the actual ex- 
pense of spraying $2.42 per acre for each application. Of course 
this expense is proportionally higher than it would be where 
fields of several acres are sprayed with a horse sprayer. AS 
already stated, $2 per acre is ample allowance for the expense of 
spraying as thoroughly as was done in these experiments. 
On Long Island the price of potatoes during September, the 
month in which the principal part of the crop of late potatoes is 
dug, ranged from 25 to 55 cents per bushel. The experiment 
potatoes were stored and actually sold in December for 65 and 
75 cents per bushel. The increase in yield per acre due to three 
sprayings was 272 bushels, worth, at 40 cents per bushel, $11. 
Deducting from this the sum of $6, the expense of the three spray- 
ings, there is left a net profit of $5 per acre. 
The increase in yield per acre due to seven sprayings was 45 
bushels, worth $18. Deducting $14 as the expense of the seven 
sprayings, there is left a net profit of $4 per acre. 
_ CONDITION OF THE POTATO CROP IN NEW YORK IN 1902. ~ 
In central and western New York the potato crop of 1902 was 
light. Prolonged wet weather delayed planting, and many fields 
afterward suffered from an excess of rain. The rains also hin- 
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