Food for 

 Plants 



If wheat shows an unhealthy appearance in early spring, 



especially upon sandy lands, an application of seventy-five 



'48 pounds of Nitrate of Soda will prove beneficial provided there is 



enough phosphoric acid in the soil to co-operate with it to make 



the grain. 



Experiment with Nitrogen. 



„, . To compare effects of Nitrogen from cot- 



ton-seed meal and Nitrate of Soda and the 

 latter applied with the seed and as a top-dressing. 



The intention was to use on each plot a constant quan- 

 tity of phosphoric acid and potash as the equivalent of 

 these ingredients in 200 pounds of cotton-seed meal. 



The first plot received cotton-seed meal 



alone, yield i 7 ■ 5 bus. 



The second, phosphoric acid and potash 

 and Nitrate of Soda all applied with 

 the seed, yield ' 20. 8 bus. 



The third received only phosphoric acid 



and potash, yield 17.6 bus. 



The fourth received in addition to phos- 

 phoric acid and potash applied with the 

 seed. Nitrate of Soda as a top-dress, 

 yield 194 bus. 



UNIVERSITY OF ARIZONA AGRICULTURAL 

 EXPERIMENT STATION. 



Timely Hints for Farmers, No. 31. 



PROF. \V. W. SKINNER. 



A fertilizer of about the composition given below has 

 frequently been advised by the Station for fertilizing orange 

 orchards, and is believed to be in every way suited to the 

 purpose. It should be applied at the rate of from 500 to 

 1,500 pounds to the acre, according to age of trees and 



