New York AGRICULTURAL EXPERIMENT STATION. 219 
RESULTS IN 1904. 
TaBLeE V.—YIELD BY SERIES AT GENEVA IN 1904. 





Series. Rows. Dates of spraying. | Yield per acre. 

Bu. lbs. 
ree ee 1, 4, 7,10 and 13.| July 18, 27 and Aug. 15....| 344 30 
BOG dats “shit 2, 5, 8, ll and 14.} July 8, 22, Aug. 1, 15 and 29.| 386 40 
| Ss i re BrOr dw lorana Lo: | INO Sprayed. cas jcrs-<Gs Cae = 153 26 



Increase in yield due to spraying three times, 191 bu. per acre. 
Increase in yield due to spraying five times, 233 bu.-per acre. 
Spraying prolonged the life of the plants 25 days. Late 
blight was the only trouble. Both on sprayed and unsprayed 
rows there was a little rot at digging time. In storage, the 
Sprayed potatoes rotted most. Spraying materially improved 
the cooking qualities. 
TABLE VI.—YIELD BY SERIES AT RIVERHEAD IN 1904. 



Series. Rows. Dates of spraying. Yield per acre. 
Bu. lbs. 
(UY ACR ie 1,4, 7 and 10....| June 14, July 21, and Aug. 9.) 257 58 
EF oat oy a0) oanderis J.) sune L424, Julys 11). 26, 
SEA) BNO EL Ua, oe. eb ai Lor 45 
he UO ead GeO. aIMh Lior tai NOU SPTAVeCi.wt ooo te sas aoc 201 25 



increase in yield due to spraying three times, 564 bu. per acre. 
Increase in yield due to spraying six times, 964 bu. per acre. 
The larger yield on sprayed rows was due chiefly to partial 
protection against flea beetles which were unusually abundant. 
Both early and late blight also present. The loss from rot 
was three per ct. on Series I., one per ct: on Series II., and 
six per ct. on Series IIT, : 
