248 REPORT OF THE DEPARTMENT OF BOTANY OF THE 
early and late blight also present. The loss from rot was three per 
ct. on Series I. and one per ct. on Series II. and six per ct. on Series 
III. 
RESULTS IN 1905. 
Taste VII.— Yretp py SERIES AT GENEVA IN 1905. 



SERIES. Rows.tf * Dates of spraying. Yield per acre. 
Bu. lbs. 
I iteveet 500, LOand: Tae) Waly ay te sos ears 25, teeter Semen eee | 228 45 
il. cso) uD, S 21 and 14...) June 29. Joly 13, 97, August 12.and 24,5 | 241 15 
Vd ee HH G9 Si ante ac) MNO’ SOTA Vecdmr.7 ember a eaCem et el A bie so Ree 121 52 


+ Rows 1, 2 and 8 omitted because of error. 
Increase in yield due to spraying three times, 107 bu. per acre. 
Increase in yield due to spraying five times, 119% bu. per acre. 
From the combined attack of flea beetles, tip burn and late blight 
the unsprayed rows died fully two weeks earlier than the sprayed 
ones. Spraying reduced the loss from rot at the rate of 41 bushels 
per acre. There was no subsequent rot in storage. 
TasLe VIII.— Yierp spy Serres aT RIVERHEAD IN 1905. . 
a SS SS ees 
{ 

SERIES.| Rows. Dates of spraying. ; Yield per acre. 
| | Bu. Ibs, 
1 ere J 4. %,20and 13.) June 14, July 18 and Anesth iia. ee eee 253 — 
ies Sai 2,5,8,1lland14.| June 14, 30, July 14, 28 and August 11...... | 303 41 
i RECA 3,6,9, 12 and oo Not spta ved Sire iaret ste caeae cine eee hae eres 221 38 

Increase in yield due to spraying three times, 311% bu. per acre. 
Increase in yield due to spraying five times, 82 bu. per acre. 
Late blight caused no injury in this experiment and there was not 
even a trace of rot. [lea beetles and early blight were the enemies. 
fought. 
RESULTS IN 1906. 
TAsLeE IX.— YIELD BY SERIES AT GENEVA IN_ 1906. 

| 

SERIES.) Rows. | Dates of spraying. Yield per acre. 
| ot 
ft, Bu. Ibs. - 
182 See 1.4.2, (and 134 july 9° Anon: 1O'nd BOs eS ae Meee Se gal 227 25 
1 ee | <2, 5, 3; Liandi[4 a: July 6, 20, Adeust6, 20 anc: 212 4. e.- 258 40 
181 6 igs Pe a, 6,9, Laandalosz aNot sprayed. eee neces chin. soe ae eee 195 40 


Increase in yield due to spraying three times, 3134 bu. per acre. 
Increase in yield due to spraying five times, 63 bu. per acre. 
