3 o8 



THE POMES 



Among the common diseases of the pomes, the apple 

 scab, bitter rot, brown rot, and pink rot affect the fruit, 

 while the apple scab and fire blight injure the foliage and 

 young twigs. There are also various forms of cankers 

 that injure the branches. The most serious disease of 

 the pear is the fire blight. 



Spraying. Although the insects and diseases of the 

 apple and pear vary with the locality they can be controlled 

 by spraying as outlined in the chapter on Fruit Pests. 



EXERCISES 



1. Why are younger trees better for transplanting than 

 older ones? What is the function of the root hairs? In 

 what way is this related to transplanting? 



2. Name the best summer, fall, and winter varieties of 

 apples growing in your section. 



3. Obtain specimens of five different varieties of apples 

 grown in your locality. If possible get three apples of each 

 variety and make observations of the points indicated 

 below. 



4. Obtain a branch from an apple tree and draw to natural 

 size. Label the annual rings, fruit spur, fruit scar, fruit bud, 

 leaf bud, and leaf scar. Show with a dotted line where the twig 

 should be cut to form a scion. 



5. Obtain three or four plates of apples of five specimens 

 each, and score according to the following score card. 



