12 FERTILIZERS IN THE WEST 



The few isolated experiments made with commercial 

 fertilizers under irrigation and dry farming conditions in 

 Washington,, California, Colorado and New Mexico have 

 demonstrated that it is indeed profitable to use commercial 

 fertilizers in those States. Considerable quantities of ferti- 

 lizers are already being used in onion culture around Laredo, 

 Texas, and some in alfalfa culture in other parts of Texas. 

 The Arizona Experiment Station recommends the use of com- 

 mercial fertilizers on orange trees. 



The results obtained with commercial fertilizers so far 

 in the States just mentioned above certainly ought to 

 encourage their use in the West, and should stimulate further 

 efforts in the same direction. This is all the more important, 

 since in other countries of low rainfall, which we are other- 

 wise apt to look upon as less advanced than our country, have 

 long since learned to appreciate the great value of commercial 

 fertilizers for not only increasing the yield and improving the 

 quality of their products, but at the same time enhancing the 

 fertility of their soil. 



The table below shows the results of systematic experi- 

 ments made with complete fertilizers containing potash, phos- 

 phoric acid and nitrogen, by the Central Office of Fer- 

 tilizer Experiment Stations in Madrid, Spain. We produce 

 here only a few of the thirty odd experiments made in the 

 dry districts of Spain. 



