New YorK AGRICULTURAL EXPERIMENT STATION. 165 
It is not known why there was such a wide difference in yield 
between the two sprayed rows measured. The vines grew equally 
well on the two rows and gave no hint of any difference. 
The potatoes were dug in small quantities at different times 
and sold as dug at prices ranging from 40 to 75 cents, the average 
price being 50 cents per bushel. 
EXPERIMENT NO. 28. 
Conducted by F. C. & L. B. Bradley, Interlaken, Seneca County. 
About five and one-quarter acres of potatoes, Carman No. 3, 
were sprayed four times with a two-horse, home-made outfit 
consisting of ia spray pump mounted in a barrel on a two-wheeled 
cart and arranged to spray four rows at a time with one nozzle 
per row. Two men were required to operate it—one to pump 
and one to drive. The last three sprayings were double sprayings, 
that is the plants were sprayed twice each time in opposite 
directions. 
The items of expense were as follows: 
218 pounds copper sulphate at 6%c.................... $14 54 
SNe UA TD Ost Brel a et 3 is pus tc opasgs an ushers: WER a AOS a Bey 45 
1 ounce yellow prussiate of potash.................... 10 
REE CI pea bret 8. an sh eG ysiedip) ot Vine th vynik gina. ss ce Hon beese ogee 1 50 
ATOR sfOr.TwO MEN ANG TCA A ens et ce Hen hee ee awee 21 00 
BA rater MeN Fats) eyeing e che asia, Whew: of dietary. aie astrataie Sows $38 89 
One row 47% rods long was left unsprayed. This row yielded 
7# bushels, or at the rate of 144 bushels 4 pounds per acre while 
the two adjacent sprayed rows, one on either side, averaged 114 
bushels or at the rate of 206 bushels 52 pounds per acre. Thus 
the gain from spraying was 62 bushels 48 pounds per acre. 
Most of this gain is due to the prevention of the ravages of 
blight and flea-beetles, but the unsprayed row suffered somewhat 
more from bugs although poison was applied to it as many times 
as on the sprayed rows. About two-thirds of the unsprayed row 
blighted badly and turned brown while the sprayed rows adja- 
cent were dark green. There was but little rot. Price of potatoes, 
oo cents. 
