New YorK AGRICULTURAL EXPERIMENT STATION. 149 
horse cart rigged to spray four rows at a time with one nozzle 
per row. One man did both pumping and driving. The dates of 
spraying were July 13, 23, August 12 and 23. ‘The expense was 
$5.12 for copper sulphate and prepared lime besides about two 
days’ work for one man and horse. 
Five rows 75 rods long, 34 inches apart, were left unsprayed. 
These rows yielded 46 bushels of marketable tubers and 71% 
bushels small ones. Five sprayed rows (three on one side of the 
unsprayed and two on the other) yielded 67 bushels marketable 
tubers and 614 bushels small ones. These yields are at the rate of 
114 bushels per acre for the unsprayed and 166 bushels for the 
sprayed, making a gain of 52 bushels per acre in favor of spray- 
ing. 
The unsprayed rows commenced to blight August 20 and all 
died in a short time. The sprayed rows did not show much blight 
until September 15 and were still quite green when killed by 
frost September 22. The contrast in appearance between sprayed 
and unsprayed rows was very marked. There was very little rot. 
The unsprayed rows were not injured by bugs. Price of potatoes, 
40 cents. 
EXPERIMENT NO. 8. 
Conducted by L. J. Wilson, Castile, Wyoming County. Hight 
acres of potatoes, planted June 14, were sprayed four times with 
an Empire King barrel spray pump mounted in a fifty-gallon cask 
on a one-horse, two-wheeled cart so rigged as to cover four rows 
at each passage with one nozzle per row. Three rows 41% rods 
long, three feet apart, were left unsprayed. 
The middle unsprayed row yielded 3888 Ibs. or at the rate of 
139 bu. 21 lbs. per acre while the second sprayed row on one 
side yielded 461 Ibs. or 165 bu. 34 Ibs. per acre. Therefore, 
spraying increased the yield by 26 bu. 13: lbs. per acre. There 
was no rot worth mentioning on the sprayed or unsprayed rows. 
The benefit of spraying would have been more marked had the 
potatoes been planted earlier or frost come later. As it was, the 
sprayed plants were in full foliage when killed by frost September 
22. The unsprayed rows were pronounced dead from blight 
about two days earlier. This was Mr. Wilson’s first experience 
spraying potatoes. . 
Market price of potatoes at digging time, 45 cents per bushel. 
