642 Bulletin 84 



in July, and a yield of 500 or 600 pounds per acre may be expected 

 in a good season. Teparies have thus far been the surest and 

 heaviest producers, but require protection from rabbits. Hopi lima 

 beans are adapted to local climatic conditions but must be planted 

 before the summer rains, since they require a fairly long season in 

 which to mature. This usually necessitates some irrigation. 



The improved. American dent corn varieties produce fairly 

 large amounts of feed and must be planted in the spring, the frost- 

 free season following summer rains being too short to allow ma- 

 turity. Early spring plantings may be made with a corn planter, 

 but plantings in the drier months should be in lister furrows. The 

 seed must be planted in moist soil. In a very dry season there is 

 insufficient moisture and improper distribution of moisture to pro- 

 duce a successful yield of dent corns. Native Indian varieties and 

 small American varieties may be successfully planted early in July, 

 in case the summer rains have already begun. 



The outlook for successfully growing small grains is not very 

 promising. Wheat, planted early in the fall, will sometimes yield a 

 fair crop, but little success has accompanied the growing of oats. 

 The drought resistance of emmer and Red Winter speltz has been 

 demonstrated on the Sulphur Spring Valley Dry-farm. 



Sorghums are well adapted to Sulphur Spring Valley condi- 

 tions. For the production of grain, Dwarf kafir, Dwarf milo, and 

 feterita should be used, and, where forage is primarily desired, 

 Dwarf kafir, Club-top, and Early Amber are the more promising 

 varieties. Excellent results have been obtained from plots of 

 Sudan grass. 



In the light of experience to date, the most successful dry-farm- 

 ing rotation for the vSulphur vSpring Valley is one consisting of grain 

 sorghums, corn, Sudan grass and beans. Greatest profits are to 

 be realized when dry-farming is combined with range stock raising. 

 Managed in this way, a farm may be made to produce ensilage 

 which may be kept for several years until a time of drought makes 

 its use advisable, while crops of beans may be sold to furnish an 

 income from time to time. 



