108 POPULAR FRUIT GROWING. 



Cedar form grow on the apple and those from the apple on the 

 Cedar. 



Remedies. Spraying with Bordeaux mixture is one remedy. 

 The best remedy, however, is to remove the Cedar apples in 

 winter or to destroy the Cedar trees. 



Fig. 43. L,eaf rust of apples, a. Apple leaf infested with the nist 

 disease, b. Twig of red cedar showing old and young cedar 

 apples, c. Portion of the tissue of the infested apple leaves en- 

 larged. 



Apple Scab fVenluria pomi). A very serious disease of the 

 apple. It attacks and kills the foliage and causes black, scab- 

 like spots on the fruit, and also attacks the young growth oc- 

 casionally. The sources of infection are the fallen leaves on 

 which the fungus matures its spores in early spring in time 

 to infect the unfolding leaves. 



