204 REPORT OF THE DEPARTMENT OF BOTANY OF THE 
The items of expense were as follows: 
S04jibs, copper ‘sil plate (@) 1OC.ks fag aan ee erm $20 40 
Sams Litte,. CO) LYSE. Sise nor selo rb vee cee Mere Shaheen reas Fae 
BO, OS PATIS: -PPEEN MD L35C is +2 bie se oo stan = oe Sea ene 9 10 
ao hrs. labor, for. mam. (ei) -20C.%s seu. deeds o's oud are ee 4 00 
20) hrs,: labor, for team (G) 80C ss <ganeep 20s ey oa. 4 ee 6 00 
Wrearvofvsprayer. oo occ ne obeouu oem sbee & oartey lcasttate othe ot oe 5 00 
LOCAL Siete cae Bs Sa eee vk erste eccteck Pa eeicie ete renee clita caret $47 22 
Where the test rows were located, the potatoes were of the Twen- 
tieth Century variety. The yields were as follows: 
Average of two sprayed rows, 486 lbs==176.8 bu. per acre. 
Middle unsprayed row, 426 Ibs.==155 bu. per acre. 
Increase in yield due to spraying, 21.8 bu. per acre. 
Notwithstanding the freedom of the plants from insects and 
blight, spraying proved profitable. The market price of potatoes at 
the time of digging the test rows was 50 cents per bushel. Ac- 
cordingly, the value of the increased yield was $10.90. Subtract- 
ing the expense of spraying, $5.24 per_acre for four sprayings, we 
have left a net profit of $5.66 per acre. 
THE BREWSTER EXPERIMENT. 
‘Conducted by E. F. Hayt, Brewster, N. Y., who sprayed 6 acres 
twice (July 17 and 26) using a one-horse, home-made, four-row 
sprayer pumped by hand and carrying one nozzle per row. In the 
first spraying, 4-4—50 bordeaux was used; in the second, 6-4-50. 
Arsenite of soda stock solution was used with the bordeaux in 
both sprayings. In addition, hills here and there were dusted with 
paris green as needed. There were three check rows, 371 x 3 ft. 
These were treated with paris green four times — July 3, 13, 7 and 
30. The season being a very dry one there was very little blight. 
Flea beetles injured both sprayed and unsprayed plants considerably 
and their ravages were not checked in the least by spraying. There 
was absolutely no contrast between sprayed and unsprayed rows. 
