May, '14[ 



GRANITIC SOIL POTASSIUM. 



17 



In order to show in a different way the behavior of soils toward 

 potassium salts, known amounts of potassium chloride in solu- 

 tion were added to these soils and the moisture content brought 

 up to 20 % by the addition of water. The samples were 

 thoroughl}^ mixed, placed in sealed jars, and allowed to stand 

 for several weeks. They were then shaken with water and the 

 amount of solul^le potassium determined by the chloroplat- 

 inate method. The results follow: 



Table IX 



