150 REPORT OF THE BOTANICAL DEPARTMENT OF THE 
all the result of spraying, there having been no interference by 
bugs. On September 22 and 23 when the test rows in the first two 
fields were dug, the market price of potatoes in Chateaugay was 25 
cents per bushel; on October 10 when the test rows in the third 
field were dug the price had risen to 40 cents per bushel. Even at 
these low prices the average net profit in the Chateaugay experi- 
ment was $13.50 per acre. The actual profit was considerably 
greater than this. The entire crop was stored. Under date of De- 
cember 21 Mr. Smith wrote that 2,200 bushels had been sold on 
November 1 at 70 cents per bushel while the remainder of the crop 
was still in storage and keeping well. 
THE PERU EXPERIMENT. 
This experiment was made by Datus Clark, Peru, Clinton county, 
who made a similar experiment for the Station in 1904. A field of 
ten acres was sprayed four times— July 24, August 8, 19 and 
September 8. In the second and third sprayings only 8 acres were 
sprayed each time, so that in reality the total area sprayed was only 
36% acres. The spraying was done with the same sprayer used in 
1904; namely, an Aroostook two-horse, six-row sprayer with one 
nozzle per row. Water for making the bordeaux was obtained 
from a river at the north end of the field. 
As there were no bugs to fight no poison was used. ‘There were 
two varieties of potato — Ironclad and World’s Fair, and three un- 
sprayed rows were left in each variety. 
The expense of the spraying included the following items: 
132-, Ibs.. copper. sulphate “@uSe. 16 sitetee nae ae oe $10.56 
88 “Lime “TCU ©. oxsaew ahem a ee .88 
2334 hrs, labor for mam (@vster J eo eee se eee 3765 
19%..." Aabor for term i@i 256 eae Be ee 4.88 
Wear on ‘sprayer, (saw at org eee Sn ee ee 4.00 
Dotal wss.p epee eels: peat este ath Be bes atten te eee a $23.85 
The cost of spraying was 6514 cents per acre for each applica- 
tion. | 
A large part of the field needs underdrainage badly and as’ the 
season was an extremely wet one the conditions were very unfavor- 
able for a crop of potatoes. On the wetter portion of the field, 
planted with World’s Fair, the plants made a weak yrowth, blighted 
¢ 
