70 . BULLETIN 1301, U. S. DEPARTMENT OF AGRICULTURE 
White Smyrna, though very early and producing the highest aver- 
age yield of grain, is too short to harvest readily. Hannchen barley 
is taller, easier to handie, somewhat later than White Smyrna, and 
yields practically as well. Svanhals, or Swanneck, is about the 
same height as Hannchen, ripens at about the same time, and yields 
practically as well. : 
Mariout and Coast, though early and of satisfactory height, have 
tough beards that stick to the seed and interfere with seeding. 
Manchuria, though well adapted to the more humid localities farther 
east, is nearly always the poorest yielder at Mandan. 
TABLE 28.— Yields of grain and straw of six varieties of barley at the Norihern Great 
Plains Field Station during the 7-year period, 1916-1922, inclusive 
Yields of grain per acre (bushels) 
Average 
Group and variety C. I. | ae ield 
No. $8 3 | Aver- of Straw 
{ 1916 | 1917 | 1918 | 1919 | 1920 | 1921 | 1922 “age (pounds) 
: | 
Two-rowed: 
Winhitesmiynnaees oa ee 195) (22950 fe2se lee b Oneal oe ins t.-@ 1-40! 8) 22-7 1, 165 
ann Ghens see At es oe ee ee 531 | 31.0 | 20.4 | 25.3 { 20:4 | 16.0}. 0 43.5 | 22.4 1, 207 
SILL ee ees eee eS 187 | 26:25) 203>).26°2 1218.71 1810 43.1 | 21.8 1, 340 
Six-rowed: 
Raspes ae eS eee as 690-| 25.8 | 16.8 |. 24.5 | 17.5} 11.4) 29) 421) 20.1 1, 050 
ATI OUT Se et ee ee 12261 | 2558 Paas oa 22565] 24350 11058 Tigra sas 949 
Nan CH Uninr tes er Fisk FS Pee e | 354 | 20/8 SAS S1756. | 1387s =6°| 3458 115:3 996 
COOPERATIVE GRAZING EXPERIMENT ® 
PLAN OF THE EXPERIMENT 
The grazing of livestock, especially cattle, on the native range of 
the northern Great Plains has been and will no doubt continue to be 
an important industry. A large percentage of the land in this area 
is unfitted for cultivated crops, either because of its location or its 
physical character. 
The cooperative grazing experiment is conducted by the Office of 
Dry-Land Acriculture Investigations in cooperation with the North 
Dakota Aoricultur al College. The United States Department of 
Agriculture furnishes the land and equipment and conducts the field 
details of the experiment; the agricultural college provides the cattle. 
The field plan of the pasture 1s shown in Figure 7 7. The section of 
land where the pastures are located 1s approximately 2 miles south of 
the station buildings. The soil of the pasture section is somewhat 
similar to that of the south field. 
The grazing experiment was started with preliminary work in 1915, 
but the grazing of four pastures with varying intensity, according to 
the plan} of the. experiment, began in 1916. These pastures were ‘put 
under a system of continuous grazing, and this system has been con- 
tinued on them. The pastures are 100, 70, oe and 30 acres in size 
and are grazed at the rate of one steer to 10, 7, 5, and 3 acres, respec- 
tively. ‘In order to obtain different paiensilies of grazing, a variation 
was made in the size of the pastures rather than in the number of 
cattle in each pasture. . 
1s By J. T. Sarvis, Associate Agronomist. 
1° cadts Popes atcha. tldeS Cag AAA 
nr ty hs ps 3 tap ere. 
