CHAPTER XX 

 PLANT FRIENDS AND PLANT PESTS 



. Problems. i. To learn something about the work of 

 microorganisms in the soil. 



2. To discover how fungi injure plants. 



3. To know the life history of common insect pests. 



4. To find out something of the value of birds to our gar- 

 dens. 



5. To learn how to safeguard the garden against ravages 

 of pests. 



Experiments and demonstrations. i. To show the life history of a 

 moth and a butterfly. 



2. To learn to recognize insects that frequent flowering or garden plants. 



3. To illustrate the proper way of making some insecticides, fungicides, 

 and sprays. 



Project I. To ELIMINATE THE PLANT PESTS FROM MY HOME 

 GROUNDS. 



1. Learn the habits and something of the life history of the pests 

 which appear. 



2. Learn what pests are most likely to attack each kind of plant 

 on the grounds. 



3. Learn when to apply sprays most effectively and about other 

 devices that may be used to prevent or destroy the pests. 



4. Learn how to prepare and to apply the sprays, etc. 



5. Report all your efforts in fighting plant pests through an en- 

 tire summer, showing to what extent your garden benefited. 



