162 ORCHARD INSECTS 



QUESTIONS 



1. Contrast insects with biting mouth-parts and those with sucking 



mouth-parts. 



2. What three things make the San Jose scale especially dreaded by 



orchardists ? 



3. What kinds of plants are attacked by this insect? 



4. What are the principal remedies used to combat the scale? 



5. Give reasons why the spraying for scale should be especially thorough. 



6. Give some idea of the damage done by the codling moth or apple 



worm to the American apple crop. 



7. What methods should be used in combating this insect? 



8. Outline the life history of the aphis. 



9. Give methods of controlling the aphis. 



10. Describe the damage to the apple from attacks of the curculio. 



11. Outline the life history of this insect. 



12. What remedies should be used? 



13. Describe the life history of the bud moth. 



14. How is it combated? 



15. Tell what you can of the canker worm and its work. 



16. How is it controlled? 



17. Tell how to combat the tent-caterpillar. 



18. Describe the life history of the railroad worm, or apple maggot. 



19. What methods are recommended in fighting this insect? 



20. Give directions for controlling borers. 



21. Give a list of insects attacking the pear. 



22. Which of these is most destructive in your section? Give methods 



of controlling it. 



23. What are the serious insect enemies of the stone fruits? 





