FORTY-FIRST ANNUAL CONVENTION 289 



The refuse from pea canneries is sometimes utilized as sil- 

 age with good results, especially in feeding dairy cows. 



The field pea has been found well suited for use as a green- 

 manure crop in the citrus orchards of southern California. 



Because of its effect on the fertility of the soil, the field pea 

 is valuable in crop rotations. 



The diseases which are most destructive are powdery mil- 

 dew and leaf-spot. 



The most destructive insect enemy is the pea weevil, but the 

 pea aphis, or plant louse, also does considerable damage at in- 

 tervals. 



