New YorK AGRICULTURAL EXPERIMENT STATION. 105 
The total expense of spraying was $3.84 per acre or $1.28 per 
acre for each application. 
The test rows were dug November 3 with the following results: 
In the smaller field.—-'The test rows were 433 ft. long by 3, ft. 
wide, 33.53 rows being required to make an acre. The yields were 
as follows: 
Second sprayed row on the north, 440 lbs. marketable tubers. 
Second sprayed row on the south, 429.5 lbs. marketable tubers. 
Average of middle two unsprayed rows, 347.25 lbs. marketable tubers. 
Yield, sprayed, 242 bu. 57 lbs. marketable tubers per acre. 
Yield, unsprayed, 194 bu. 3 lbs. marketable tubers per acre. 
Gain, 48 bu. 54 lbs. marketable tubers per acre. 
There was no loss from rot. The yield of small potatoes was 
at the rate of 15.5 bu. per acre for the sprayed rows and 24 bu. 
per acre for the unsprayed. 
In the larger field—— The test rows in this field were 590 ft. long 
by 3 ft. wide, 24.61 rows being required to make an acre. The 
yields were as follows: 
Second sprayed row on the north, 467 lbs. marketable tubers. 
Second sprayed row on the south, 350.5 Ibs. marketable tubers. 
Average of the middle two unsprayed rows, 351 lbs. marketable tubers. 
Yield, sprayed, 167 bu. 39 lbs. marketable tubers per acre. 
Yield, unsprayed, 143 bu. 58 lbs. marketable tubers per acre. 
Gain, 23 bu. 41 lbs. marketable tubers per acre. 
There was no loss from rot. The yield of small potatoes was at 
the rate of 19.4 bu. per acre for the sprayed rows and 24.6 bu. 
per acre for the unsprayed. We are unable to account for the 
low yield of the second sprayed row on the south. This row was 
handicapped in some way, but just how it has been impossible to 
discover. Probably this test is unreliable and it is a question 
whether the results should be included. ) 
Summary.— Combining the results of the two tests we have an 
average gain of 36 bu. 18 lbs. marketable tubers per acre. At the 
time of digging the test rows the market price of potatoes in New 
York was $2 per barrel of 156 lbs. After deducting 30 cents per 
_ barrel for expense of marketing, the net price would be $1.70 per 
barrel, which is about 65 cents per bushel. At this price 36 bu. 18 
Ibs. of potatoes would have a value of $23.60. Subtracting $3.48, 
the expense of spraying, there remains a net profit of $19.76 per 
acre. 
