Smithsonian Report. 1945. — Perry 



Plate 1 





1. Five-Year-old Guayule Shrub Grown under Cultivation on Non- 

 irrigated Land in the Salinas Valley. Calif. 



When harvested, the entire plant is dug about as shown, since rubber occurs in both the aerial parts and 

 roots. This specimen is somewhat larger and more symmetrical than the average field plant. 



2 Seeding a Guayule nursery. 



The seeder drops the seed on top of a finely prepared bed and then flows a ribbon of sand over them to hold 

 them in place. Guayule plants have trouble emerging if covered with soil. The beds are 4 feet wide and 

 are served by overhead lines spaced 10 beds apart. 



