608 



Bulletin 84 



nearly ripened as possible, while the stalks and leaves are still 

 succulent. 



A combination of dry-farming with range stock raising appar- 

 ently offers the largest profits of any system of dry-farm manage- 

 ment capable of adaptation to conditions similar to those of the 

 Prescott Dry-Farm. Dry-farmers with full silos and range stock 

 have a decided advantage over stockmen who depend wholly on 

 the range, or dry-farmers who depend upon crop sales for cash. 

 With this system of management, such crops as beans and potatoes 

 may be grown to sell for cash to shorten the intervals between 

 times of financial income. It is important that dry-farmers realize 

 the limited production of a unit area of their land, and that their 

 farms are ample in size. Table LXVII states capacities of silos of 

 various sizes. 



T.\|;LI". I. XVII. CAPACITV OF SILOS* 



*From Circular No. IT, Extension Sei\ice, Univer.sity of Arizona, by W. A. Barr. 



THE SULPHUR SPRING VALLEY DRY-FARM 



The Sulphur Spring \'alley Dry-farm'* established by the Ari- 

 zona Agricultural Experiment Station in August, 1913, contains 

 160 acres near Cochise on the main line of the Southern Pacific 

 Railroad, which crosses the northwest corner. 



The soil is a red loam of varying structure with occasional 



*Por map of Sulphur Spring Valley Dry-farm see Twenty-eighth Ann. Rept. 

 Aiiz. Asrric. Kxp. Sta.. p. 400. 



