New York AGRICULTURAL EXPERIMENT STATION. 135 
On the date of digging the test rows the market price of potatoes 
in Gainesville was 43 cents per bushel of 62 pounds. At this price 
the value of the increase would be $28.04 per acre. Subtracting 
from this $5.41, the cost of spraying, we have left a net proft of 
$22.63 per acre. However, the actual profit in this experiment was 
considerably greater than this. Most of the crop was stored and 
afterward sold at 58 cents per bushel and upward. 
THE ARKPORT EXPERIMENT. 
Conducted by Taylor Bros., Arkport, Steuben county. These 
gentlemen are extensive potato growers, growing and spraying 55 
acres of potatoes in 1905. However, the experiment here described 
was confined to one field of six acres. The variety was Sir Walter 
Raleigh. The potatoes were sprayed four times — July I, 6, I0 
and 25. The machine used was a one-horse, Aspinwall power 
potato sprayer carrying eight nozzles and covering four rows at 
each passage. Bugs being exceedingly troublesome, paris green 
was used with the bordeaux in all five sprayings at the rate of one 
pound per acre. 
Three unsprayed rows 1450 feet long were left as a check. These 
were treated with paris green as many times and on the same dates 
as the sprayed rows, but they were slightly more damaged by bugs 
than were the sprayed rows. ‘Taylor Bros. state that bugs were un- 
usually difficult to control. They found the paris green more 
effective when used with bordeaux than when used alone. 
The expense of spraying six acres four times was as follows: 
Paaelibscmeonnercuinhate (a) G85C7.-0 sic nt vo, c4 os oe denier pekiane as $9. 36 
EMME SMO oc rts gel ok stor Sha ge fatees we oe cine t 2 
MEM ER TIS. TERY (DOC 2h pees. OT eh e ote lee al bea 5.20 
Pee wlabOrstor Man-and \horse,@ 300.) ve. bi. ws's Soe eee Sones 6.00 
ee Re ere EM ont as kt aide «fae bes Che ae etre 2.40 
TTI eit cuca hangin ak iat gyre ies ak eine Ase” BPRS PO A ge ae $23.68 
The total cost of spraying was $3.95 per acre or 98% cents per 
acre for each application. However, when it is considered that four 
applications of paris green for bugs would have been required any- 
way it will be seen that the actual extra expense of the spraying 
for blight was only the cost of the copper sulphate which was 
$9.36 or $1.56 per acre. 
