152 Report OF THE BoTANICAL DEPARTMENT OF THE 
The market price of potatoes at digging-time was 35 cents per 
bushel. | 
EXPERIMENT NO. 13. 
Conducted by C. Zimmerman, Adams Basin, Monroe County. 
Five acres of potatoes, variety Carman No. 3, were double- 
sprayed four times with a New Victor two-horse potato sprayer 
covering five rows at a time with one nozzle per row. About 
2,000 gallons of bordeaux were used and the total expense of the 
spraying was $35.90, the items being as follows: 
40 pounds copper sulphate at 6 cents................ $14 40 
TUES Sets eh os woe ae Santee Pog Cetew ew oad eae pee ane eee 90 
40 pounds paris green at 14 cents ................-. 5 60 
4 days’ labor, man and team, at $3.75 ............. 15 00 
Miata ae rats ans, SRE RET eer ove ae eee chee area eae $35 90 
Total. cost Of spraying per Aeresv ya ce. eee $7 18 
Five rows 34 rods long were left unsprayed. Two of these 
rows yielded 15 1-8 bushels or at the rate of 198 bushels 25 
pounds per acre, while two sprayed rows nearby yielded 18 2-3 
bushels or at the’ rate of 241 bushels 33 pounds per acre, mak- 
ing the gain from spraying 43 bushels 8 pounds per acre. 
The unsprayed rows blighted about a month earlier than the 
_ sprayed. The loss from rot was practically the same on the 
sprayed and .unsprayed rows, being estimated at 2 per ct. in 
each case. The unsprayed rows were not injured by bugs. 
Market prices of potatoes, 50 cents. 
EXPERIMENT NO. 14. 
Conducted by Rufus <A. Babcock, Spencerport,, Monroe 
County. Eighteen acres of potatoes, variety Dooley, were 
sprayed five times with a one-horse home-made rig carrying 
a Deming barrel spray pump and rigged to spray four rows 
at a time with one nozzle per row. It was operated by one 
man who could spray the entire 18 acres in one day. The items 
of expense were as follows: | 
305 pounds copper sulphate at 6 cents............... $18 30 
POS POUNUA HOLS Ste baie uh cot em Reg eeAPEC IAS 4 60. 
