8 LEAFLET 104, U.S. DEPARTMENT OF AGRICULTURE 
ately (fig. 4). Under normal weather conditions, 10 days in the 
shock is sufficient for drying before threshing. The seed is easily 
threshed with an ordinary grain separator (fig. 5). To avoid loss 
FIGURE 4.—Harvesting a seed crop of crested wheatgrass, Dickinson, N.Dak. 
of seed in threshing, the speed of the fan should be reduced or the 
air intake to the fan closed. With some separators it is desirable 
to lower the rear of the machine from 6 to 12 inches so that the 
seed may pass back to the delivery and the straw be handled more | 
satisfactorily. | 
FIGURE 5.—Threshing crested wheatgrass, Dickinson, N.Dak. 
Crested-wheatgrass seed can be cleaned with an ordinary farm 
fanning mill equipped with the proper sieves. A fair standard 
for crested wheatgrass seed is a bushel weight of 22 pounds, a purity 
of 88 to 90 percent, and a germination of 90 percent. 
U.S. GOVERNMENT PRINTING OFFICE: 1934 
For sale by the Superintendent of Documents, Washington, D.C. - - - - - - Price 5 cents 
