Arizona Agkrtltural Experiment Station 265 



The grain sorghums are more drought resistant than corn and in 

 a less favorable year would have compared more favorably with that 

 crop. W hile shallu made the heaviest yield of forage it does not make 

 the best silage and its growth should not be encouraged. 



Saccharine sorgliiiins: Club-top cane, Red-top cane, Early Am- 

 ber cane, and Early Orange cane were tested in plats of more than one 

 acre in size. These sorghums were all sown from May 10 to June 12. 

 Club-top planted May 10 yielded 11,650 pounds of green silage per acre, 

 Club-top planted :\lay 31 yielded 11,456 pounds, Red-top planted June 

 9 yielded 5775 pounds. Early Orange planted June 9 yielded 8592 

 pounds, and Early Amber planted June 12 yielded 3686 pounds per 

 acre. The Club-top out-yielded all of the other sorghums, and as a 

 silage crop is very valuable as a supplement to corn. 



Sudan grass: A little over 8 acres were planted to Sudan grass 

 on May 10. One small plat was planted as late as June 5. This late 

 planted plat was practically a complete failure due not so much to the 

 date of planting as to the poor soil and the depth to which the seed was 

 sown. All of the Sudan grass was planted in rows 40 inches apart 

 with the exception of one-half acre which was set in 20-inch rows. The 

 narrow rows yielded only 1000 pounds of dry hay per acre while the 

 rest of the field, except the late planted plat mentioned above, yielded 

 slightly over 1.5 tons of dry hay per acre. All of the Sudan was cut 

 three times and furnished a considerable amount of green pasture be- 

 tween the time of the last cutting and the first frost in November. 



Small grains: During the fall of 1915 several varieties of wheat 

 arid rye were planted, but all were either destroyed by winter killing or 

 by rabbits, except one plat of rye. The rye had a very meager stand 

 and was not worth harvesting. All the small grains were considered 

 complete failures. 



SILOS 



During the year a 40-ton cement silo was constructed on the farm. 

 This is the second silo to be built, the first one being a pit silo built the 

 year before with a capacity of about 35 tons. 



GENERAL CONCLUSIONS 



Plowing should be done in this locality in the fall or early winter. 

 Spring crops should be sown as early as late frost will permit in order 

 to take advantage of the winter moisture that has been retained in the 

 soil. Locally grown seed should be used on account of its acclimatiza- 

 tion to local conditions. 



