Subsoiling to Conserve Moisture 



133 



growth of wood in the fall, and thus lead to danger 

 from winter -killing, the reply is that when it is done 

 late, just before freezing up, there can be no danger 

 on this score. 



2. Subsoiling to Conserve Moisture 



Subsoiling to conserve soil moisture cannot have 

 the extended practice that methods of surface tillage 

 should, but there are cases when it is quite likely to 

 prove sufficiently helpful to pay for the relatively heavy 

 expense which it involves. In view of this fact, and 

 because it is being urged particularly in the sub-humid 



Fig. 24. Method of determining the influence of Subsoiling. 



belt, the principles underlying the practice should be 

 clearly understood. 



The method used to demonstrate the influence of 

 subsoiling in retaining the rains which fall upon the 



