New York AGRICULTURAL EXPERIMENT STATION. 119 
The test rows were dug and weighed on October 25. The 
yields were as follows: 
Second sprayed row on the west, 625 pounds marketable tubers. 
Second sprayed row on the east, 580 pounds marketable tubers. 
Average of two sprayed rows, 60214 pounds marketable tubers. 
Middle unsprayed row, 293 pounds marketable tubers. 
Yield, sprayed, 162 bu. 16 lbs. marketable tubers per acre. 
Yield, unsprayed, 78 bu. 55 lbs. marketable tubers per acre. 
Gain, 88 bu. 21 lbs. marketable tubers per acre. 
The yield of culls was at the rate of 22 bushels 29 pounds per 
acre on the sprayed rows and 29 bushels 5 pounds per acre on the 
unsprayed, the difference being 61% bushels, per acre in favor of 
the unsprayed. 
There was no rot. The total yield from the twelve acres was 
2330 bushels, or an average of 194 bushels per acre. 
The items of expense of spraying the twelve acres are as fol- 
lows: 
417 pounds copper sulphate at 614.................... $27 10 
MA reeRI TL LeveL LINC AA) Cae Sore Louie. «onal <Yeto lace! ove! Qocce nets Pubs o eue 2 00 
EO MESA DOT LOL TEAM AU PE) Coe sercidhcS, viqteiaays sinister #ieibya > 9 00 
Mr De One LOT sag elle L29( o ies btea te alg eeiac beayeisk ocalalnns (ance 10 50 
Interest on cost of sprayer ($65 at 6%)............05. 3 90 
Wear on sprayer (5c per acre each spraying).......... 3 00 
OTD taps ee Sipe Sac aR Ee Ns i eee ay aay BOI nT Oe ar $55 50 
SMOPUECOSL OlsSpravino DCL CTO. Gs cic se ce cc wt ieie veg be wns $4 6216 
Bepem per ACTE LOT CAC SPLAVIN Gy sn 6 . scenes he's ¥ arg ole a sles 921, 
At 40 cents per bushel, the market price of potatoes at digging 
time, 83 1-3 bushels of potatoes would be worth $33.83.  Sub- 
tracting $4.68, the cost of spraying per acre, there remains a net 
profit of $28.70 per acre. 
Although there were five other farmers’ business experiments 
in which the gain per acre was more than 83 1-3 bu., the Clifton 
Springs experiment ranks first in the percentage of gain, which 
was 105.6 per ct. Spraving more than doubled the yield. If 
