XXI 

 HOME PROBLEMS ON CROP PESTS 



Here is a way to make your study of the preceding insect 

 groups very practical : Examine the crop list on page 157 and 

 pick out the crops in it that are of most importance in your 

 home locality. The insect enemies of those crops are told by 

 numbers in that list. Then turn to the pest list on page 152 

 and get their names (the insect names corresponding to these 

 numbers). Write them down; and then go to some intelligent 

 grower and ask him which of the insects that you have 

 written down are the important ones in your locality. Then 

 get these insects and use them for study as representatives 

 of the several orders. 



For example, if you are studying the true bugs (Hemiptera, 

 Lesson 6 on page 70), and if the grape is an important crop 

 in your locality, the crop list on page 158 will tell you that 

 among the enemies of this vine there is an aphid that attacks 

 the roots (B,17), and that there are also leaf aphids (E,16), 

 leaf hoppers (E,26), plant bugs (E,29), and scale insects 

 (E,30). Now, if the leaf hopper is the worst pest of this vine 

 in your locality, be sure to use grape-vine leaf hoppers as 

 part of the illustrative material for this lesson, and learn 

 all you can about them, their habits, their life history, and 

 the best means for their control. 



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