Summary. 99 



7. The cultural range of the quince is narrower than 

 that of the apple, and the fruit is used almost wholly for 

 culinary purposes. Quince orchards, properly located and 

 cared for, have generally proved profitable (83, 84). 



8. The stone fruits succeed on lighter and drier soil than 

 that best suited to the pome fruits. The trees may, there- 

 fore, be more liberally cultivated and manured. The flower 

 buds form flowers the flrst season of their life, hence the 

 fruit is borne on wood of the preceding year (90, 91, 92). 



9. Five different botanical species of the plum are culti- 

 vated in the United States and Canada. Of these, only the 

 northern native plum is hardy in the more northern sec- 

 tions. The European plum is most generally grown (94). 



10. The plum fruits mainly on spurs from two or three- 

 year-old wood. The tree requires little pruning, as a rule 

 (95, m). 



11. The chief insect enemy of the plum and cherry is 

 the plum curculio. It is mainly held in check by the 

 *' jarring process" (99). 



12. The fruit rot, a fungous disease that attacks the fruit 

 as it approaches maturity, is often a cause of serious loss 

 to the plum and cherry grower in wet seasons. Spraying 

 the fruit just before the picking season, liberal thinning of 

 the fruit, and picking it when a little hard, are the most 

 important preventive measures (101). 



13. The most satisfactory stock for the plum, at least in 

 the north, is seedlings oi' Fr anus Americana (104). 



14. Two botanical species of the cherry are exten- 

 sively cultivated in the United States and Canada. Of 

 these, the sour cherry {Prunus cerasus) has the much 

 wider cultural range (106). The fruiting habit of the 

 cherry closely resembles that of the plum (107). 



