New YorK AGRICULTURAL EXPERIMENT STATION. Dion 
RESULTS IN 1906. 
TaBLE IX.—YIELD BY SERIES AT GENEVA IN 1906. 

SE I IS aT ae 

Series. Rows. Dates of spraying. ° Yield per acre. 
Bu. lbs. 
il 4 co ReneeS eau 1,4, 7,10 and 13.) July 9, August 10 and 30...| 227 20 
Pe a 2, 5, 8, ll and 14.| July 6, 20, Aug. 6, 20 and 21.} 258 40 
NS A 70,9) L2and/152) Notisprayed 2. v.22. ties: 195 40 

Increase in yield due to spraying three times, 31% bu. per acre. 
Increase in yield due to spraying five times, 63 bu. per acre. 
Late blight, early blight, flea beetles and tip burn were all 
factors in this experiment, but none of them caused much 
damage. Spraying controlled blight and flea beetles completely 
and tip burn partially. The loss from rot was negligible, only 
four rotten tubers being found in the entire experiment. 
TABLE X.—YIELD BY SERIES AT RIVERHEAD IN 1906. 


Series. Rows. Dates of spraying. Yield per acre. 
Bu. lbs. 
er. f3 anit: 1,4, 7,10 and 13.} June 12, July 18 and Aug. 6.| 172 -— 
Prorat. 2, 5, 8, 11 and 14.| June 12, 25, July 10, 25 and 
INU OLVAR ee ele reed ey Act 203 45 
ET hes ae 56,9pi2and lo:iVNotsprayed i. 3 ica s ok os oats 150 30 
Increase in yield due to spraying three times, 214 bu. per acre. 
Increase in yield due to spraying five times, 534 bu. per acre. 
In the experiment at Riverhead the principal enemies were 
late blight and flea beetles, there being a moderate attack of 
both. Early blight was not sufficiently abundant to cause 
material injury. There was no loss from rot. 
