48 BULLETIN 1173, U. S. DEPARTMENT OF AGRICULTURE. 
Figure 23 presents in graphic form the average yield obtained from 
all rates on each of the five dates. 
DATEL OF SOW/NG 
SLPT/7 GER ZL OCT. /F OC7 FO NOVI 
na RC le 
BMRB See ee 
BRERERR SESE sS 
BRRRSESE RES ac 
SR 
fee | Silo] Salas a 
BRR eee aes 
PS |e ee 
je) foal eS eee 
HERE EE ETERS 
(oBERSESS See 
Fic. 23.—Average acre yields of Turkey winter wheat sown at all rates from 2 to 8 pecks per acre on each 
of five successive dates, September 17 to November 19, in the 6-year period from 1916 to 1921, inclusive, 
at the Sherman County Branch Station, Moro, Oreg. 
BUSALLS 
2F 
TaBLE 28.—Average yields of Turkey winter wheat in the rate-and-date-of-seeding expert- 
ment at Moro, Oreg., during the 6-year period from 1916 to 1921, inclusive. 
Yields per acre (bushels). 
Rate of seeding. Average date of seeding. Average. 
Sept.17.| Oct.2. | Oct. 14. | Oct. 30. | Nov. 19.| Actual. | Net.t 
DEDOCKS 8 fee haas sss See oe ec 29.9 34.3 | 31.6 22.1 | 19.4 | 27.4 26.9 
+ iG). ee eee 34.1 33.9 32-0.) 2256.) 20.1 28.9 28.1 
Aone Seyi ee Se eee ee ee | 32.7 33. 0 32. 1 25.5 22.3 | 29.1 28.1 
Pies ey ee see a ens 4 ae 34.5 RY 3k. 1 26.6 23.9 | 30.7 29.4 
PREG Seo eee ak 33.9 32.5 30.7 26. 8 23.9 | 29.5 | 28.0 
(OS 2 ee eae a050 B25 32.1 28.2 24.0 | 30.5 28.7 
5) (AGES Se eee ee ae 34.6 31.4 ail 27.8 | 23.5 | 0b 28.1 
FAUKEBACH 2 2: Lose Pee ae 33.6 33.6 31.9 25.6 22.4 29.4 28. 2 
1 Average yiell, less the quantity sown. 
The time of emergence of the winter-wheat plants has not always 
borne a consistent relation to time of sowing. In the autumn of 1917 
rains came so late that the wheat sown on the first three dates emerged 
at the same time. In the other four years there was sufficient 
moisture in the soil so that emergence of the early-sown wheat oc- 
curred within 7 to 20 days after sowing. Late-sown winter wheat 
usually does not emerge for about a month, on account of the cooler 
weather prevailing. Sometimes the plants of the late-sown wheat 
