IDEAL FERTILIZERS 55 



user would all be eaten as only glass and lead can with- 

 stand its attacks. 



What Makes Soil Acid? This could be answered in 

 three words, Lack of Lime, for there is no form of 

 acidity that would not be corrected by the presence of 

 basic lime; but a list of acid-producing causes will not 

 be out of place: 



Decaying of roots left when clearing away virgin 

 growth. 



Lack of drainage. 



Turning under of green vegetation. 



Cultivating land when too wet, especially in hot 

 weather. 



Burning sun on bare, moist soil. 



Natural leaching away of the small lime content com= 

 mon to most Florida soils. 



Leaching "Ammonia" leaches away as soon as it be- 

 comes actual plant food unless used by plants, but the 

 loss of phosphoric acid and potash is insignificant. Lime, 

 sodium, and magnesia all leach away rapidly. 



