New York AGRICULTURAL EXPERIMENT STATION. OL 
In this experiment there appears to have been no late blight 
whatever, no rot, and but little, if any, early blight. The chief 
enemy was the flea-beetle which did considerable damage to the 
unsprayed rows. When we saw the experiment field on August 
12, the plants were somewhat affected with tipburn. At that 
time the sprayed rows were in but slightly better condition than 
the unsprayed, and up to the close of the season there was no 
marked contrast. The yields were as follows: 
Two sprayed rows (north plat), 161 pounds.*® 
Two sprayed rows (south plat), 188 pounds. 
Average yield per sprayed row, 8714 pounds or 211 bushels 
3 pounds per acre. 
Two unsprayed rows (north plat), 12 
Two unsprayed rows (south plat), 153 pounds. 
Average yield per unsprayed row, 70 pounds or 169 bushels 24 
pounds per acre. 
Average gain due to spraying, 41 bushels 45 pounds per acre. 
Market price of potatoes at digging time, 50 cents per bushel. 
T 
pounds, 
EXPERIMENT NO. 36. 
Conducted by J. H. Beadle, Washington County. Three rows 
across a ten-acre field were sprayed three times with an Auto- 
Spray compressed-air sprayer. (Plate XVI, fig. 2.) The pota- 
toes were of the variety World’s Fair. 
There was not much difference in appearance between the 
sprayed and unsprayed rows until about September 12 when the 
unsprayed rows suddenly blighted and died while the sprayed 
rows continued green until killed by frost September 22. 
Owing to the pressure of farm work Mr. Beadle was unable to 
compare the yield of sprayed and unsprayed rows as carefully as 
he wished. However, he did weigh the tubers from 25 sprayed 
hills three feet apart, and also those from 25 unsprayed hills in 
an adjacent row, with the following results: 
Twenty-five sprayed hills, 92 pounds or at the rate of 296 
bushels 51 pounds per acre. 
Twenty-five unsprayed hills, 77-pounds or at the rate of 248 
bushels 27 pounds per acre. 
Gain due to spraying, 48 bushels 24 pounds per acre. 
—_— —_ -——— 

“On both plats the sprayed rows measured were next to the unsprayed 
rows. 
