26 BULLETIN 33, U. S. DEPARTMENT OF AGRICULTURE. 
Table XI shows that the average actual yield per acre of all 
varieties of oats grown in 1907 was 53.6 bushels; in 1908, 39.5 
bushels; in 1909, 75.8 bushels; in 1910, 40.5 bushels; in 1911, 10.8 
bushels; in 1912, 56.1 bushels; and in 1913, 57.9 bushels. The aver- 
age of these averages for the seven years was 47.7 bushels.. The 
variations in the average yields for the different years, due to the 
physical conditions, are about in the same proportion as were those 
in the average yields of the spring-wheat varieties. The cultural 
methods used were practically the same. 
TABLE XII.—Computed (annual and average) yields of 26 varieties of oats at 
the Dickinson substation, 1909 to 1913, inclusive, compared with the average 
actual yield for the same years. 
Yield per acre (bushels). 
& e | Variety. | Average. 
1909 1911 1912 1913 
Com- 
puted Actual. 
IBAV ES Wwiedishts cleGia sae seas tee ee ae es | 81.3 9.8 52.3 68. 7 53 50.3 
GO je) eB AMIN Ty rae ya Se eee ee ee eee peeps 87.9 8.2 63. 1 47.8 51.8 52.2 
AGH a LOU Y=! Daye eeera sc eae ore eee Wenere ae teens eee a |S ay ert PRY 45.4 47.8 38.8 BONE 
AD ial nal CTSOMe a) se ae 2 sre a 2s aera ea no are ee one 80. 7 16.4 5d53 52.7 ole 48.5 
AOZEGG.OlG SMS TIN Ma Paes on yee Sane Ged eae 86. 3 112 62. 2 69. 7 57.4 58 
Biles AVENE GO PER SG LAAT sy ete ee geen eae pee 80. 9 igo) |eoeGan Se 53.5 49.2 44 
ode eb arya Mountains pa ee en ee rene meee 88. 5 Celis epic slate ee Ae 48.1 46.9 
Patel Oeil ee eesti Ohare hr aie ar oh heat ts a EH ae oe eRe le eRe gai Tera Ses 80. 6 GEO hl etsy | Ces oer 43.8 41.3 
ADD ALG 1S OWiO Sarin: ie seam esr goes ora cies terme cise pe ere ere ce Re ee ren ete ite ee ha Slee 
UU ae tae rete ee ea ore el Ses oe Monta eee ee TBA oo teens ee Eas | 
OD Ay Maer seis ie wrt cetera eitad ee repre euraayd geo ke es eine a nea CDAD Ne ee eee Be EI Ses lS ey | 
3667 MB laCkeB Ties te =o pees 8 Dect eect we vistas SOW a Monta rlee Sows voc aapa| amet ie |e eam 
BOS ale Canedaam tte ie fou ems Yering: Se nium ee ay ame TiS alert e oes es lee oe od eae 
36a ellen exProlince eee open ee ee eee eee (A089) See ee eee Tee OA wae oe 
3780 |(Beseler INOW betsss vais aoe ste b epictvee ease ets CORD dle oye Ee SIS Gy Rene eet le ee a 
Ad} aWinite-Lartaniam: 30 --sia esas ee ee STS Gale oie etek ea | tee ees |e eee | eres 
ASS s | sSHablOVSKy a= 45 se eee Bees eee ee eee oP el ee pore ea nos Ne A ol aeerco ose 
AOU EL VAGMT Os aoe to eet ee ie Sore ot er ue gee (ERO Mesoanee Eee man bseeren lion as ade cond 
OG ets Lac kell CLE ae ae ee eee ee eee tPA itt Peles oe bene eerie oc |nessaeiocl ad oone ce 
AOTA|\ SIAC ke Moo UES = a Sake Berta eee Gee gs CADET?) ee ees se eee | nic coe. = Al oe paoee ee ereeees 
AS | \WVOUNI) 12s ROL ORT Ss os Seo coos sosueeessodsceeSopae (Oe Aloe Eo aeee | so ciate oe | See aes abe eee 
XG) (PNAC RO) Cy Gaese sneer aA Ay ae aes Sen Se 87.3 3.1 60. 3 (algas | =.SBy, & 56.8 
G5 Sul BTS MEOUM Es cise tie ee oer ete cra earn ee en Syl ee 84. 2 12.3 59.6 63.9 55 54.6 
552 | Regenerated Swedish Select................... TOR Gay Poaceae gees es ce eer a) Ses sears | Papa [ae 
G5 OG ASIEV STINET No ood Sere ie deve ees oe ee 63. 9 7.6 53.9 70. 4 49 48.7 
AO MR CRIN oR ee ae net ate ee cere eis ase ve Sears al | te ee ers 19 56. 3 55.5 43.6 38.9 
656nelWarlyeMiountaingNO2 esses eee ee ees Meee 11.3 58. 7 67.3 45.8 45.7 
1 The check plats of the 1910 crop were destroyed by hail; therefore no computed yields are given for that 
year. 
SUMMARY OF OAT YIELDS. 
The actual and computed annual and average yields of the leading 
varieties of each group of oats are given in Table XIII. Four 
groups of oats—medium early, medium late, early, and late—are 
represented, ranking in yield in the order named. The average 
actual yield for the seven years from 1907 to 1913 for the two leading 
medium-early varieties is 12.5 per cent greater than the average 
actual yield of the two leading early varieties. For the five years 
1908, 1909, and 1911 to 1918, the average actual yield of the leading 
medium-early variety is 13 per cent greater than that of the medium- 
late variety, 17 per cent greater than that of the leading early 
