CEREAL EXPERIMENTS AT THE WILLISTON SUBSTATION. 1 
A summary of the yields of twelve standard varieties of wheat at 
Williston is given in Table VII. Seven of these varieties have been 
tested for the entire period of seven years, two for six years, and three 
for only two years. The average yields for each of these three 
periods are shown. ‘The varieties in Table VII are arranged accord- 
ing to these groups. 
Taste VII.—Annual and average yields of 12 varieties of spring wheat grown at the 
Williston substation for three different series of years between 1908 and 1914. 
Yield per acre (bushels). 
Group, Cereal Investigations number, Average. 
and variety. 
1908 | 1909 | 1910 | 1911 | 1912 | 1913 | 1914 1908 | 1909 | 1913 
to to | and 
1914. | 1914. | 1914, 
Durum group: 
LA AO ME Keulllo ATK Bie icicke wleieiejevsie' =o stn sce 12.6 | 39.1 | 11.0] 8.9 | 51.0 | 33.0 | 53.8 | 29.9 | 32.8] 43.4 
SOUR EAT aUGlc see enee esac =e rine 15.6 | 37.4 6.1 8.2 | 49.7 | 34.7 | 47.2 | 28.4 | 30.6] 41.0 
1570, MAC ANRO Gas ANH Paseo wi ceieveneealeee ee eee AEA qe Cee es ae ae Ui Oy Gi acdoq dlesoous 44.8 
Fife bor, 
SO OMe Hep OWW Clacyeqs ave ciecis stein oie ciateiacas cieveials 13.1 | 34.0: 17.1 | 11.1} 44.7 | 28.7 | 51.3°| 28.6 | 31.2 40.0 
3694, TE (SCG I a Vey ee i ee a De cha 11.3 | 34.2 | 14.9 | 10.2 | 46.0 | 28.7 | 47.9 | 27.6 | 30.3 | 38.3 
2873, Glyndon (Minn. No. 163)!......| 9.8 | 31.2 | 13.9} 8.0] 44.7 | 28.2 | 49.2 | 26.4 | 29.2 | 38.7 
1517, CCU aU Lege seca ee eee eee oe || EEO Soe leZ0n2a lel eolldale22n2 a AO Aa eee 30.0] 31.3 
SOM IMAT GUISE eyecare Nn eee eI Sl ae tea ae PL) 0) PED Ss eos |saseee 40.8 
Preston | group: 
SOUS TE TES LOM: Su eae oe Sa oe cee Se oes © 2652 |-1Sh4n| AQ. ICA | 2580 46s dele eee 28.1 35.7 
: Bluestem group: 
3083, Dakota (N. Dak. No. 316) ......| 16.7 | 35.1 | 11.1 | 10.9 | 42.3 | 30.7 | 47.5 | 27.8 | 29.6 | 39.1 
3021, Haynes (Minn. No. 51).......-.- 14.2 | 35.9] 11.0] 9.2 | 42.3 | 29.2 | 46.3 | 26.9 | 29.0] 37.8 
Doble Mes! (Manis NG sl69)) pe aes [aes | le a ve SOROH CADE oe lees | eereaas 36.3 
1 Previous to 1911 the Glyndon variety was grown from seed originally obtained from the Edgeley sub- 
station in North Dakota; in 1911 and succeeding years it was grown from seed originally from the Minne- 
sota Agricultural Experiment Station. 
For the period of seven years the Kubanka durum wheat (C. I. No. 
1440) made the highest yield, 29.9 bushels per acre. The Power fife 
wheat was second in yield, with an average of 28.6 bushels. These 
varieties also led for the 6-year period (1909 to 1914), during which 
the Ghirka (C. I. No. 1517) and the Preston (C. I. No. 3698) were 
included. Figure 6 shows graphically the annual and average yields 
of the leading varieties within the four different groups for the six 
years from 1909 to 1914, inclusive. 
In 1913 the Taganrog (C. I. No. 1570), Marquis (C. I. No. 3641), 
and Haynes (C. I. No. 2874) were added to the test. The averages 
for 1913 and 1914 show that in the durum group the Taganrog 
variety yielded more than the Kubanka, and that in the fife group 
the Marquis variety was better than the Power. 
The average dates of heading and of ripening, number of days 
from planting to heading and to maturity, height, yield per acre, and 
weight per bushel of grain for the varieties grown during the 6-year 
period (1909 to 1914) are shown in Table VIII. Figure 7 shows 
heads of eight representative varieties of the four groups of spring 
wheat. 
