YIELD OF DRY-FARM CROPS 289 
comparatively small annual yield of dry-farm crops 
is emphasized in 
view of the common 
practice of summer 
fallowing, which 
means that the land 
is cropped only every 
other year or possi- 
bly two years out of 
three. Under such 
conditions the yield 
in any one year is 
cut in two to give an 
annual yield. 
The use of the 
header wherever 
possible in harvest- 
ing dry-farm grain 
also aids materially 
in maintaining soil- 
fertility. By means 
of the header only 
the heads of the 
grain are clipped off ; 
the stalks are left 
standing. In the 
fall, usually, this 
stubble is plowed 
under and gradually decays. 
U 
Dry-farm barley. Utah, 1909. 
In the earlier dry- 
