POTASH PAYS 



EXPERIMENTS ON RAISIN GRAPES 



The experiment illustrated on the preceding page, 

 conducted by Mr. A. J. Bump, Orosi, Cal., was made in a 

 ten year old vineyard of Muscat Grapes. 



Owing to depletion of soil fertility the yields were not 

 very satisfactory, but through the use of fertilizers contain- 

 ing potash a marked increase has been obtained as shown 

 by the following results : 



The test on grapes described on the following page 

 was made in the vineyard of F. C. Lewis, Fowler, Cal. 

 "Thompson's Seedless" was selected for this experiment, 

 and the results, reported for two years show that potash 

 was essential to the largest yields, a good profit being 

 obtained from its use. 



Plot 



Amount of fertilizer material 

 applied per acre in pounds 



No fertilizer 



120 Muriate Potash 

 600 Superphosphate 

 180 Nitrate Soda 



600 Superphosphate 

 180 Nitrate Soda 



Yield per acre 

 in pounds 



Increase over 



unfertilized plot 



in pounds 



