WOODY PLANTS FOR DRY-FARMING 251 



Shaw suggests that sanfoin, long famous for its service 

 to European agriculture, may be found to be a prof- 

 itable dry-farm crop, and that sand vetch promises 

 to become an excellent dry-farm crop. It is very 

 likely, however, that many of the leguminous crops 

 which have been developed under conditions of abun- 

 dant rainfall will be valueless on dry-farm lands. 

 Every year will furnish new and more comj^lete in- 

 formation on this subject. Leguminous plants will 

 surely become im])ortant members of the association 

 of drj''-farm crops. 



Trees and shrubs 



So far, trees cannot be said to be dry-farm crops, 

 though facts are on record that indicate that by the 

 application of correct dry-farm ]:»rinciples trees may 

 be made , to grow and yield profitably on dry-farm 

 lands. Of course, it is a well-known fact that native 

 trees of various kinds are occasionally found growing 

 on the deserts, where the rainfall is very light and the 

 soil has been given no care. Examples of such vege- 

 tation are the native cedars found throughout the 

 Great Basin region and the mesquite tree in Arizona 

 and the Southwest. Few farmers in the arid region 

 have as yet undertaken tree culture without the aid 

 of irrigation. 



At least one peach orchard is known in Utah which 

 grows under a rainfall of about fifteen inches without 



