18 
BULLETIN 
IT. S. DEPAETaEEXT OE AGEICULTURE. 
Kubanka No. 8 and Arnautka, have averaged 16.7 bushels each, 
a yield slightly but not significantly less than that of the Marquis. 
Of the commercial common wheats the Haynes Bluestem yielded 
12.5 bushels, a significant difference of 4.6 bushels less than the 
Marquis. The Power and Preston varieties also yielded less than 
Marquis by 0.8 and 1.2 bushels, respectively. The Acme was grown 
only in 1919 and outyielded all other varieties that year, partly, at 
least, because of its rust resistance. 
Table V. — Yields of seven varieties of spring vSheat grown at the Northern Great Plains 
Field Station, Mandan, N. Dak., during the 4-year period from 1916 to 1919, inclusive, 
compared with the Marquis variety for the years grown. 
[Experiments conducted in cooperation with the office of Dry-Land Agriculture.] 
CI. 
No. 
Yield per acre 
(bushels). 
Class, group, and variety. 
1916 
(5 plats). 
1917 
(5 plats). 
1918 
(5 plats). 
1919 
(5 plats). 
Average. 
1916 
to 
1919. 
Difference 
from 
Marquis. 
COMMON. 
Fife: 
Marquis 
Power 
Bluestem: 
Haynes 
Preston: 
Preston 
DURUM. 
Kubanka: 
3641 
3697 
2874 
30S1 
5284 
4064 
4063 
13.8±0.5 
9.1±0. 1 
7.2±0.2 
10.7±0.3 
12.5±1.0 
16.4±0.7 
11.3±0.9 
15.2±0.8 
27.4±1.0 
26.1±1.4 
18.8±1.4 
21.9±1. 1 
14.6±0.6 
14.4±0.6 
12.8±0.7 
15.9±0.2 
17.2±0.6 
12.0±0. 8 
12.0±0.4 
17.1 
16.5 
12.5 
15.9 
"^6.'8±i.'2 
-4.6±1.5 
-1.2±1.5 
4-2.6+0.8 
Arnautka 
Kubanka No. 8 
12.5±0.7 
15.3±0.2 
15.0±0.3 
13. 8 ±0.9 
27.3±1.2 
25.5±1.0 
16.7 1 - .4±0.8 
16.7 - .4±0.9 
RESULTS AT HAVRE, MONT. 
The Fort Assiniboine Field Station of the Montana Agricultural 
Experiment Station at Havre. Mont., is located on a medium clay- 
loam soil at an altitude of 2,500 feet and has a normal annual pre- 
cipitation of 13.67 inches. Experiments with cereal varieties have 
been conducted at Havre for the four years, 1916 to 1919, inclusive, the 
Montana Agricultural Experiment Station and the Office of Cereal 
Investigations cooperating. The yields are shown in Table VI. 
In the 4-year period the Marquis wheat has yielded at the rate of 
14.6 bushels per acre. In general, durum wheat has produced larger 
yields than Marquis. Of the durum wheats, the Peliss has been the 
highest yielding variety, outyielding both Kubanka and Arnautka. 
It has produced an average yield of 3 bushels per acre more than 
Marquis. Of the common wheats, the Galgalos, a white wheat, has 
outyielded Marquis by 2.8 bushels. In a 3-year period, 1917 to 1919, 
the Power has outyielded Marquis by 0.8 bushel. All other common 
wheats have yielded less than Marquis, the yields of Prelude, Pioneer, 
and Havnes being significantlv lower. 
