284 THE STONE FRUITS 



If the plant lice appear spray the trees with Black Leaf 

 40 at the rate of 1 part to 500 parts of water. 



Cut out and burn all knots whenever they are seen. 



REVIEW QUESTIONS. 



1 . Name the stone fruits. 



2. Why are these fruits called stone fruits? 



3. How does the sweet cherry differ from the sour cherry? 



4. Why is the cherry usually propagated by budding? 



5. How does the soil for the cherry differ from that of the peach? 



6. What conditions influence the distance apart the cherry should be 

 planted? 



7. What determines the time for planting young cherry trees? 



8. Discuss the cultivation of the cherry. 



9. Name three sweet and three sour cherries for home planting. 



10. Discuss the brown rot of the cherry and give the best remedy for its 

 control. 



11. How is the black knot of the cherry controlled? 



12. Give the spray outline for the cherry. 



13. What factors prove that the peach is a very old fruit? 



14. Discuss the propagation of the peach. 



15. Has the soil and the site of a peach orchard any relation to each other? 



16. What type of soil is preferable for the peach? Why? 



17. Discuss the preparation of the soil before planting the peach. 



18. What treatment should be given the young peach tree before 

 planting? 



19. What determines the distance in setting out the peach? 



20. How do the peach yellows differ from the little peach? 



21. What is used for the control of the peach-leaf curl? 



22. How can the peach-tree borer be exterminated? 



23. Why is it impossible to control the borer with an insecticide? 



24. Give the spraying outline for the peach. 



25. How does the plum compare in age with the peach? 



26. How does the propagation of the plum differ from that of the peach or 

 the cherry? 



27. Discuss the methods of planting the plum. 



28. What is the value of thinning the fruit of the plum? 



29. Name several varieties that are generally grown. 



30. Discuss the diseases common to the plum? What remedies are 

 advised? 



31. Discuss the plum cur culio. How is it controlled? 



32. Give the spray outline for the plum; 



