418 



ARID AGRICULTURE. 



sides to protect the tree trunks from simscald, 

 and if small evergreens are planted it is neces- 

 sary to furnish some kind of shade the first 

 season. 



Plate LIX. A Good Way 

 to Leave the Top. 



Plate LX. 



A Bad Way to Cut Back 

 a Tree Top. 



CULTIVATION 

 AND CARE 

 OF TREES 



Never allow grasses or weeds to grow close 

 around the trunks of young trees. They use up 

 plant food and pump out of the soil enormous 

 amounts of water. Clean cultivation in or- 

 chards or tree plantations should never be neg- 

 lected. Plowing around the trees forces them 



