SPRING WHEAT ON THE NORTHERN GREAT PLAINS. 
29 
T a.ble XII. — Yields of 25 varieties and strains of spring wheat grown at the North Platte 
(Nebr.) Substation during the 7-year period from 1913 to 1919, inclusive, compared with 
the Marquis variety for the years grown. 
[Data used by courtesy of the Nebraska Agricultural Experiment Station.] 
CI. 
No. 
Yield 
per acre (bushels). 
Class, group, and variety. 
1913 
1914 
1915 
1916 
1917 
1918 
1919 
Average. 
1913 
to 
1919 
Difference 
from 
Marquis. 
COMMON. 
Fife: 
Marquis 
3641 
1517 
2873 
4800 
3697 
2874 
6049 
4324 
3081 
4797 
4799 
6235 
6.8 
4.3 
20.2 
18.3 
16.3 
11.7 
8.8 
9.5 
10.5 
9.5 
14.0 
10.4 
11.8 
Ghirka Spring 
-1.5±0.7 
Kitchener 
6.5 
10.8 
10.3 
3.4 
1.8 
— 6.4±0.9 
Bluestem: 
-7.5±0.4 
Preston: 
Humpback II 
9.6 
10.6 
10.5 
9.1 
7.5 
7.1 
— 2.9±1. 7 
19.7 
15.8 
15.9 
17.9 
5.4 
9.7 
11.5 
13.4 
— 2.1±1.4 
Preston 
—2.1 ±1.3 
Preston (Scotch Fife) 
3.0 
4.9 
3.0 
2.8 
6.6 
6.6 
-3.7±1. 7 
Red Spring (Potter) 
9.4 
-2.5 + 1.4 
Ladoga: 
7.2 
Miscellaneous: 
Defiance 
3.9 
3.1 
2.2 
3.0 
2.8 
-7.1±4.0 
Galgalos 
— 9.8±6 5 
Prelude 
4323 
4798 
5284 
4064 
20.2 
18.7 
21.8 
13.4 
9.0 
10.2 
10.8 
14.6 
14.4 
14.0 
'n.s 
+2.6±2.6 
8.3 
4.1 
20.2 
+ .9±0.4 
DURUM. 
Kubanka: 
Acme 
Arnautka 
17.8 
20.0 
18.4 
19.0 
19.5 
18.4 
18.7 
10.6 
9.8 
13.5 
6.2 
8.1 
11.1 
11.6 
8.4 
9.4 
8.9 
9.1 
8.6 
9.0 
9.4 
— .2±0.5 
Gharnovka 
7.2 
7.3 
3.0 
2.1 
24.1 
21.0 
+ . 8±0.5 
Kubanka. . .. 
1440 
4063 
15.8 
13.1 
12.4 
+ .6±0.5 
Kubanka No. 8 
— 1.1±0.5 
Kubanka selection No. 1 . . . . 
7.7 
9.8 
9.0 
8.9 
3.9 
2.9 
2.7 
4.0 
17.1 
19.2 
13.6 
- .7±0.5 
Miscellaneous: 
Kahla 
+ .3±0.6 
Saragolla t . . 
- ,7±0.9 
Velvet Don 
+ .9±1.0 
In the 7-year period from 1913 to 1919, inclusive, Marquis wheat 
has yielded at the rate of 11.8 bushels per acre. During the same 
period a white wheat known as Palisade has outyielded it by 0.9 
and Kubanka durum wheat by 0.6 bushel, respectively. In shorter 
periods four other durum wheats and Prelude common wheat have 
outyielded the Marquis, but none of them by a difference that is 
significant. The earliness of the Prelude variety has given it an 
advantage over other varieties in two of the four years during which 
it has been grown. The late-maturing varieties, such as Haynes 
Bluestem, are usually at a greater disadvantage in this section than 
farther north, as they generally are damaged or destroyed by hot 
winds, summer droughts, or rust. The Humpback II variety, 
which is grown commercially in the vicinity, has not }delded as well 
as the Marquis in the two years 1918 and 1919. All varieties of 
spring wheat have produced low yields at North Platte, as this 
district is much better adapted to growing hard winter wheat. 
