OLIVE ROOT SYSTEMS. 



29 



9 



The depth of the course followed by these large roots of 12 to 18 

 inches is a very marked feature. Most interesting is the deep pene- 



24\ ; 12' 



S. 



Fig. 7.— Diagram showing the distribution of superficial roots (solid lines) and deep roots (dotted lines) 

 of a Manzanillo olive tree on the Pope olive plantation, near Palm Springs, Cal. 



tration, almost vertically, of branches from many of these roots to 

 depths of 2, 3, 4, and even 5 feet, where they were left, owing to the 



mm 





Fig. 8.— Diagram showing the root system of a typical dry-land olive tree on the Pope olive plaiitat 

 near Palm Springs, Cal., showing the jjosition and distribution of the roots in the soil. 



difficult nature of the digging. In most cases gi-avel and cobb 

 stones of considerable size were encountered at these depths, and 



192 



ion, 



le- 

 as 



