CROPS FOR DRY-FARMING 243 
Tennessee Winter, which is already well distributed 
over the Great Plains district. 
Rye is one of the surest dry-farm crops. It yields 
good crops of straw and grain, both of which are valu- 
able stock foods. In fact, the great power of rye to 
survive and grow luxuriantly under the most trying 
dry-farm ‘conditions is the chief objection to it. Once 
started, it is hard to eradicate. Properly cultivated 
and used either as a stock feed or as green manure, 
it is very valuable. Rye occurs as both spring and 
winter varieties. The winter varieties are usually 
most satisfactory. 
Carleton has recommended Emmer as a crop pecu- 
liarly adapted to semiarid conditions. Emmer is 
a species of wheat to the berries of which the chaff 
adheres very closely. It is highly prized as a stock 
feed. In Russia and Germany it is grown in very 
large quantities. It is especially adapted to arid and 
semiarid conditions, but will probably thrive best 
where the winters are dry and summers wet. It 
exists as spring and winter varieties. As with the 
other small grains, the success of emmer will depend 
largely upon the satisfactory development of winter 
varieties. 
Corn 
Of all crops yet tried on dry-farms, corn is perhaps 
the most uniformly successful under extreme dry 
conditions. If the soil treatment and planting have 
