ORCHARD SOILS 



137 



There is also little evidence in this countiy to show that 

 the application of lime to orchard land has any appreciable 

 effect on the trees or the quality of the fruit. Its effect in 

 increasing the growth of cover-crops on certain soils is quite 

 another question and must at once be recognized. Indirectly 

 this may bring about an increase in the growth and yield 

 of the trees as is discussed in a later chapter. 



120. Alkaline soils. — An alkali soil is one which is 

 strongly impregnated with various salts, such as sulfate, 

 chlorid, and carbonate of sodium, magnesium sulfate, cal- 

 cium sulfate, calcium chlorid, and others. In some sections 



Table XXXI 



ALKALI IN SOILS OF ORCHARDS (AFTER LOUGHBRIDGE) 



