238 REPoRT OF THE BOTANICAL DEPARTMENT OF THE 
THE CHATEAUGAY EXPERIMENT. 
Conducted by O. Smith & Son, Chateaugay, N. Y. Ten acres 
were sprayed four times using a one-horse, four-row “ Iron 
Age” sprayer carrying one nozzle per row. Bordeaux of the 
6-6-50 formula was used, the necessary water for its prepara- 
tion being pumped by horse power from a stream at one side 
of the field. In the first and third sprayings arsenite of soda 
was applied with the bordeaux mixture to keep bugs under 
control. It was used at the rate of three quarts of the stock 
solution to 50 gallons of bordeaux. There were four check 
rows. These were treated with paris green twice, July 13 and 
31. .The writers did not see this experiment until digging 
time, but Mr. Smith reports that the sprayed rows outlived 
the unsprayed ones by about three weeks. He thinks the dif- 
ference was due chiefly to early blight, which was prevented 
by the spraying. 
The expense account contained the following items: — 

216 lbs. copper sulphate @ Baer (6), SCORN Eee ee eee $18 .28 
Ze Dis Te DO LO eas oP austere ccs wateseke ods ee eens ee ee 2,20 
80 lbs,.sal soda. @ .36.:.5 \idbeks FA AR2 AE LT ee ee ee 2.40 
20:lbs. white arsenic (Seis fe 5 okt 2g Ae ee a ee eee 1.60 
21¢hrs. man labor (@)-15¢..) 252s $ss 84) le yee ee eee 3.23 
21inra, horse labor @ 10.515 ..0/) 0s 2 pag 2 Pee ee epee 
Wear of Sprayer.) ii iy dos oi a.43 beats 8 4 es 10.00 
POUR ST, a waters ce :dcbir el Biss s (bso ee aaa ears Ro a en $40 .93 
‘The test rows were dug Oct. 2. They were 1,507 ft. long 
by 87 in. wide and the potatoes were of the variety Uncle Sam. 
The yields were as follows: 
Four sprayed rows, 3,502 lbs.==136.7 bu. per acre. 
Two unsprayed rows, 1,340 lbs.—=104.6 bu. per acre. 
Gain, 32.1 bu. per acre. 
There was no loss from rot. 
On Oct. 2 the market price of potatoes at Chateaugay was 
60 cents per bushel. At this price the gain of 32.1 bu. would 
have a value of $19.26. Deducting the expense of spraying, 
$4.09 per acre, there remains a net profit of $15.17 per acre. 
