New York AGRICULTURAL EXPERIMENT STATION. 169 
expense for labor and material being $2.60. Two rows 90 feet 
long were left unsprayed. 
The two unsprayed rows yielded 24014 pounds, or at the rate 
of 323 bushels per acre; while the two adjacent sprayed rows 
(one on either side) yielded 26014 pounds, or at the rate of 350 
bushels 13 pounds per acre, making the gain from spraying 27 
bushels 13 pounds per acre. It is believed that the difference 
in yield was entirely due to the spraying. There was no damage 
done by bugs. 
Although the tops did not blight much there were some rotten 
tubers, the quantity being somewhat greater on the unsprayed 
than on the sprayed rows. 
The market price of potatoes at digging time was 35 cents per 
bushel. 
EXPERIMENT No. 34. 
Conducted by Jay T. Buchanan, Akin, Montgomery County, 
who sprayed five acres of potatoes for himself and five acres for 
his brother. Five sprayings were made with an Aspinwall four- 
row sprayer having two nozzles per row and applying about 50 
gallons of bordeaux per acre at each spraying. 
The items of expense for spraying five acres of potatoes five 
times are as follows :** 
27 barrels bordeaux. mixture at 4414¢................ $12 O1 
6 days’ labor for man and horse at $2.25.............. 13 50 
RR TTS AE ee eR Da cian toe othe « 69-5 +k ocs' ops eRe 3 00 
Re re CMR ieee eatery hats. aia diag Gvake oth ek) si'ai dina res alesse $28 51 
In one of Mr. Buchanan’s own fields one row (Row O) 452 
feet long was left unsprayed. The adjacent row on the east 
(Row C) was sprayed five times with 50 gallons of bordeaux 
per acre each time; the second row on the east (Row D), the 
same; the adjacent row on the west (Row B) received two 50- 
gallon sprayings followed by two double or 100-gallon spray- 
ings; while the second row on the west (Row A) received two 
50-gallon sprayings followed by three double or 100-gallon spray- 
“The expense here given is only for Mr. Buchanan’s five acres. No record 
was kept of the expense of spraying on his brother’s field. 
