230 REPORT OF THE BOTANICAL DEPARTMENT OF THE 
THE BATAVIA EXPERIMENT. 
Conducted by G. A. Prole, Batavia, N. Y. Thirteen acres 
of potatoes were sprayed five times with a two-horse, four-row 
“Tron Age” sprayer carrying one nozzle per row. Water was 
obtained from a well about eight rods from the field. The 
pumping was done by a windmill. Poison (arsenite of soda) 
was used with the bordeaux in the first spraying at the rate 
of 3 qts. of the stock solution to 50 gallons. The check con- 
sisted of a strip of three rows 1,424 ft. long by 34 in. apart. 
These were treated with paris green twice—July 11 and Aug. 
18. During the last three weeks of growth the check rows 
were plainly somewhat inferior to the adjacent sprayed rows. 
There was no blight, but the check rows had suffered more 
from the attack of flea beetles and bugs. Inasmuch as the 
check rows received two applications of poison. while the 
sprayed rows received but one Mr. Prole considers that the 
sprayed rows did not have an unfair advantage. 
The expense account contained the following items: 

392 lbs.. copper stlphaté @ Giese so. pele es ope ee $24.50 
aU, aime @ Boers BAe, See eal ER, is ees oe ore ee cece 1.00 
32 Ibs. ‘sal -coda.@.2¢? so; ciug its. 22a ee pe ce eee .64 
8 Ibsr white arsenic (@ P26 6’... '5 «ps se ieee ceo ee .96 
674 hres labor for'mannt@® 200.90. oy coe: Oe tan ee ee ee 13.50 
135,hrs.labor forihorse;@.5¢l« }n..02 ot eee ee Eee eee ee 6.75 
Wear ON SDTAVEE «sje, 6» se were park aoe cae a oat Mes en i ee 5.00 
A Kel e:) ee en MEE SNS years he re ge $52.085 
The test rows (Sir Walter Raleigh) yielded as follows: 
Two sprayed rows, 1,818 lbs.—=163.6 bu. per acre. 
Middle unsprayed row, 752 lbs.—=135.3 bu. per acre. 
Gain, 28.3 bu. per acre. 
At 55 cents per bushel 28.3 bu. have a market value of $15.56. — 
Subtracting the expense of spraying, $4.03 per acre, we have 
left a net profit of $11.53 per acre. 
