FRIENDS AND ENEMIES OF PLANTS 191 



QUESTIONS 



1. Discuss the meaning of the term insects. 



2. Discuss the general classes of insects. 



3. What sprays are recommended for biting insects ? 



4. Describe in a general way the sucking insects. 



5. What kind of spray should be used against these insects ? 



6. Name some simple remedy that may be used against soft-bodied 

 insects. 



7. Discuss predaceous insects. 



8. Name some of the common insect enemies. 



9. Discuss the plum curculio. 



10. Describe the potato beetle and suggest remedy. 



11. Discuss (a) the cankerworm, (6) the army worm. 



12. Describe (a) the tent caterpillar, (6) the tobacco worm. 



13. Discuss the cotton-boll weevil and suggest means of fighting? it. 



14. Discuss (a) cutworms, (6) the codling moth. 



15. Describe (a) the Hessian fly, (6) the San Jose scale. 



16. Discuss the general idea that birds are injurious to farmers. 



17. Discuss harmful birds. 



18. What can you say of harmful animals ? 



19. Discuss (a) rabbits, (6) rats and mice, (c) gophers. 



20. What can you say of the prairie dogs ? 



21. Discuss (a) moles, (6) goats. 



22. Name some animals that are beneficial to plants. 



23. Discuss (a) the toad, (6) horned toad, (c) frogs. 



24. Name other animals that may be beneficial. 



REFERENCES 



Three Insect Enemies of Shade Trees, Farmers' Bulletin No. 99. 

 The Usefulness of the American Toad, Farmers' Bulletin No. 196. 

 Important Insecticides, Farmers' Bulletin No. 127. 



Spraying for Apple Diseases and the Codling Moth in the Ozarks, Farmers' 

 Bulletin No. 283. 



Insects, Lora S. La Mance. 

 Insects and Insecticides, Weld. 



