140 



AGRICULTURE FOR BEGINNERS 



Make a collection of insects injurious to orchard fruits, showing in 

 each case the whole life history of the insect, i.e. eggs, larva, pupa, 

 and the mature insects. 



SECTION XXXI GARDEN AND FIELD INSECTS 



The Cabbage Worm of the early spring garden is a 

 familiar object, but you may not know that the innocent- 

 looking butterfly hovering here and there about the cabbage 

 patch is laying eggs which are soon to hatch and make 

 the dreaded cabbage worms. Fig. 1 34 shows the butterfly 

 and several stages of the larvae. Fig. d 

 shows the pupa case. You may find 

 these cases during winter on trees, 

 fences, and under boards and stones. 

 If you kill these pupae, you have the 

 satisfaction of knowing that you have 

 prevented many cabbage worms that 

 would have worked mischief the fol- 

 lowing year. 



Treatment. Birds are a great aid in 

 the destruction of this pest. Paris green 

 on young plants will also kill many 

 larvae. After the cabbage has headed, 

 it is very difficult to destroy the worm. 

 The Chinch Bug, attacking as it does such important crops 

 as wheat, corn, and grasses, is a well-known pest. It prob- 

 ably causes more money loss than any other garden or field 

 enemy. In Orange County, North Carolina, farmers were 

 once obliged to suspend wheat growing for two years on 

 account of the chinch bug. In one year in the state of 

 Illinois this bug caused a loss of four million dollars. 



FIG. 133 

 THE CHINCH BUG 



