New York AGRICULTURAL EXPERIMENT STATION. 97 
THE CHATEAUGAY EXPERIMENT, 
This experiment was conducted by Oliver Smith and Son, 
Chateaugay, Franklin County, who made a similar experiment 
for the Station in 1905. A field of 25 acres of potatoes, variety 
Uncle Sam, was sprayed all over three times and 20 acres of it a 
fourth time. The sprayer used was the same one used in the 
1905 experiment, viz., a one-horse “Iron Age” potato sprayer. 
Four rows were sprayed at each passage with two nozzles per 
row,— one a “ Vermorel” and the other a “ Bordeaux.” The 
quantity of bordeaux applied varied from 41 gallons per acre 
in the first spraying to 60 gallons per acre in the last spraying, 
the total amount used during the season being 4,825 gallons. 
The dates of spraying were as follows: Ist, July 6, 7, 10; 2d, July 
Pe ie, 16; 3d, August.6, 8, 9; 4th, August 22, 23. 
The bordeaux used was of the 6-6-50 formula. Water was ob- 
tained from a brook at one end of the field. By means of a small 
gasoline engine the water was pumped through 240 feet of iron 
pipe into a 75-gallon mixing tank on a platform. This arrangement 
greatly lightened the labor connected with the preparation of the 
bordeaux mixture and also saved a considerable amount of time. 
One man, doing all the work including the mixing of the bordeaux, 
could spray the entire 25 acres in from 14 to 15 hours. 
Three strips of three rows each were left unsprayed. The 
unsprayed rows received three applications of paris green in water 
to control “ bugs.” The sprayed portion of the field also was treated 
three times for “ bugs.’’ In the second spraying paris green was 
used with the bordeaux at the rate of two pounds to fifty gallons, 
while in the last two sprayings arsenite of soda was used at the 
rate of two quarts of the stock solution to fifty gallons of bordeaux. 
Early blight was abundant in this experiment and was only par- 
tially controlled by the spraying. In the latter part of_the season 
late blight, also, became a factor. No damage was done by flea 
beetles. | | 
The items of expense for spraying 25 acres three times and 20 
acres a fourth time, which is equivalent to spraying 95 acres once, 
were as follows: 
200 Ibs. copper sulphate @ 514¢...... BO oe eta oEh Sma ne ie $10.50 
PPMP ISTO CODDECH ISTP MALE Tete enlace cle aeons bce nis hadeeeallaeule ob -45 
mre mConner Stulphate ..634¢. 10.5 wicca njan.e mmals pin Hae Sale wre gin ee 2c).a 
Bere er Olle CODDET ASMA LO arias at ehh pehnus ania © ei vcle Miuaun vies .70 
MrT ati S TOT EEN. (OD TOF Wor )n pian. « disses Aus? alpen Ahi ga es Week eM oiale 2.52 
ELIMI 1 se OPCEN Is OG Wr ii kcal ale tre One Rabe Rad ania UMigMia ba s+ 6.cO 
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