. 
‘‘s i eel 
igh ae e ae * eas af ct ae a - we : ; 
LA eS : : . . — 
cae "WHEAT PRODUCTION ON DRY LANDS, 93 
BLE 10. —Annual and average yields of Turkey winter wheat in tillage experiments 
a Moro, Oreg., during the 9-year period from 1913 to 1921, inclusive—Continued. 
_ [Yields ef check plats, all of which were plowed on April 1, are not included in the averages.] 
i Yields per acre (bushels). 
} | { 
| 
Method of cultivating | | | | | 
r fallow. e | | ; | | 
| 
i 
Average. 
1921 | Nine | Fient 
years, | vears, 
1913 to | i914to 
| 1913 | 1914 | 1915 | 1916 | 1917 1918 | 1919 1920 
| 1921. | 1921. 
Plowed June i (early | 
summer). 
| F . | 
Treatment 1........... B.0) 2.7) 23.9 343 1 2.3) 323 29.0 | 32.5 27.3} 27.9 
Treatment 2..._..._._. 7.4|.22.1| 21.5| 36.2) 248] 23.0] 198| 242] 23.0] 224| 243 
@reatment 3 (check)... 23.0) 25.7] 26.5} 32.0| 25.0; 21.2| 35.8, 27.7] 37.5| 283| 2%9 
Treatment 4........._. 7.2| 2.0] 21.3] 36.8] 225) 227] 198] 25.0] 240] 226] 24.5 
patient 5_.........- 7.3| 21.6] 20.5] 348| 247! 26.0] 195) 26.5| 25.2] 229| 249 
SS 10.8| 21.3] 21.5| 36.3] 20.8' 182] 93.0| 26.0| 273| 22.8! 24.3 
"ae 6.5! 185] 2.8) 342) 206; 261) 198) 225| 27.1] 225) 24.4 
“Treatment 8 (cheek. %.0| 27.2| 25.0} 320| 233) 20.3/ 37.8] 37.0| 382| 296] 30.1 
Treatment 9........... 10.5| 19.0) 195} 323| 243) 2.0) 21.3) 23.5) 24.7| 21.7) 231 
Treatment 10........_. ered 18.0} 22.1) 36.2] 243) 195| 193) 26.3] 242) 224) 237 
Average......... 10.6} 21.5| 21.4) 351] 23.1; 22.0| 21.8] 261] 26.0| 231| 26 
| 
_ Plowed in early fall | 
(dry). | | | | | 
Birestment1......... sae | 93.5 | 25.5| 347] 20.0| 183! 30.5) 226| 396]....... 27.6 
' Treatment 3 (check)... 1. ._.. (29) 2400 43.7) 24 244 B82) 38.9) 42.8 on 31.8 
Treatment 4........... toed 27.9) 181] 35.3| 20.7) 180| 288) 0.6) 345 [70000 24.9 
= == | 241 244 429) 213° 213 324 307) B88 | 29. 5 
Si | 24.4) 26 / 368] 2057 17.9) 357) 26) 384 [207 28.1 
Average......... es %.7-| 22.6; 37:6| 20.6! 18.9] 31.9| 27.1] 37.8 ]_.....- 27.5 
| 
ie (ae a a  ) Ma ea) does Pore Dor 
Plowed in late fall | | | | 
ét)- i | | 
atment 1_.......... a 21.2; 23.9| 20.5| 20.6 16.6 31.7, 2.6| 40.6]....... | 26.5 
‘Treatment 3 ay pee 35.0) 21.81 321] 23+ 2.5) 35.3) 29.4| 40.1|_-....- 28.4 
Treatment 4........... eee 19.5] 22.0] 34.6| 182{ 16.6| 328} 25.7] 40.0|......- 6.2 
‘Treatment 5.........- Cae 22.8 24 312) WS 183 319 25.2) B77 |r 26.3 
Treatment 6........... Sees 1.2} 22.5! 28.6| 20.6) 157| 328] 23.7| 387 |....--- 25.5 
SS Ses SSE eee ee ee eee ee ae ees ee 
Average......... ee: 21.2 22.5 31.2 20.3| 16.8 32.3 25.3 | 39.2 | oe 26.1 
Tasre 11.—Annwal and average yields of Turkey winter wheat on fallow land plowed on 
different dates at Moro, Oreg., during the 8-year period from 1914 to 1921, inclusive. 
Yields per acre (bushels). 
Method and date of plowing. 
j 
; 
1914 1915 | 1916 | 1917 | 1918 1919 | 1920 1921 | AVer 
Cae 
: 
| | | | | | sie 
Fall plowing: | | 
Disk plow— | | 
rae pled er e-ee--++-------- aay 4a aes 19.0 17.6 cok ee ee 24.8 
Peet: tere po cee ee 2 SOS FS 1G 3 43.3 |... |... 7 
Moldboard plow— | | | rs | | ae 
Sea 24.1) 22.8] 41.0] 222) 201] 328] 27.1| 37.8] 2&5 
ir) Soe eee 271.3 | 21.6 | 32.1) 203] 17.2; 33.2] 25.31 39.2] 263 
| } i | 
erioral An Til 1 (early)............ 28.9; 25.9/ 40.9] 22.3} 21.3) 37.5] 31.7| 31.5| 30.0 
; Plowed May 1 (late) si seabee ot 0 CS a 22.5 |- 31.2| 30.3; 30.6| 2&2 
_ Summer plo k 
 Plowed June 1 (early) ee eee: =: 21.5/ 21.4] 35.1| 23.1] 220/ 21.8) 261] 26.0 24.6 
« | | 
