64 



T. Lyttleton Lyon and James A. Bizzell 



lime was applied, the increase of sodium in the drainage water as the 

 result of the fertilizer treatment was not materially fi;i<^'ater than in the 

 case of the unlimed soil. The crops on the potash-fertilized soil contained 

 considerably less sodium than those on the unfertilized soil. 



EFFECT OF POTASSIUM SULFATE ON TOTAL QUANTITY OF BASES IN DRAINAGE 



WATER 



The total quantity of the four bases — calcium, magnesium, potassium, 

 and sodium — in the drainage water from the tanks fertilized with sulfate 

 of potash and in that from tanks not so treated, is shown in table 54: 



TABLE 54. 



Average Annual Kemoval of Bases in Drainage Water as Affected 

 BY Applications of Sulfate of Potash 



The application of potassium sulfate increased in each case the quantities 

 of calcium and magnesium, and in less degree the quantity of sodium, 

 in the drainage water. It is doubtful whether the increase in sodium is 

 not within the limits of experimental error. The relative increase in these 

 constituents is shown in table 55: 



TABLE 55. Increase or Decrease of Bases in Drainage Water, Taking as 100 

 that from Soil Receiving no Sulfate of Potash 



Magnesium appears to be freely liberated from this soil both by lime 

 and by the potassium salt, but especially by the latter. These substitutions 



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