494 



Bulletin 94 



]»runing. The fruit of some varieties hangs on the trees all winter 

 if not gathered. The fruit of others falls easily and is likely to be 

 shaken off in picking. 



The olive is adapted to extremely arid conditions, through special 

 leaf structure and a much ramified root system. Trees are known to 

 maintain themselves under extremely hot. dry conditions with a mean 



Fig. 2. Showing fniilini; liiibil of the olive. Flowers borne on wood of previous 

 season's growtli. 



annual rainfall of not more than four inches. In the Casa Grande and 

 Salt River valleys isolated trees are growing and producing small crops 

 without irrigation. 



A peculiar growth is found on old trees in the form of enlarged 

 swellings or burls on the trunk, extending about a foot above the sur- 

 face of the ground, from which the roots radiate (Note the base of 



