2 BULLETIN 30, U. S. DEPARTMENT OF AGRICULTURE. 



reported in this bulletin were begun during that period, but the work 

 had not progressed far enough in 1909 to warrant the publication of 

 any conclusions.' Now, however, considerable definite information 

 is at hand, which is presented and discussed herein. 



DESCRIPTION OF THE SUBSTATION. 



It is believed that the results obtained at Nephi are applicable to 

 only a portion of the Great Basin area. In many sections of the 

 Great Basin the rainfall is so limited that dry farming as it is now 

 understood is quite impossible. There are many thousands of acres 



Fig. 1. — View of a portion of the Juab Valley, Utah, looking east along the Levan Ridge toward the 

 Wasatch Range. The substation farm occupies the foreground. Photographed April 23, 1912. 



in this area, however, where the results obtained at the Nephi sub- 

 station are applicable. A comparison of the climate of any section 

 with that of Nephi will show whether or not it is safe to apply them. 

 In making such a comparison the exact location, the amount and 

 distribution of the rainfall, and other climatological factors should 

 be considered in detail before any conclusions are drawn. In order 

 to allow such a comparison, a detailed description of the Nephi sub- 

 station is hero given. 



LOCATION. 



The Nephi substation is located in Juab Valley, in the eastern part 

 of Juab County, Utah, almost in the center of the State. This valley 



