118 



PESTS OF GARDEN AND FIELD CROPS 



attacked, both in the field and in storage. The worm is quite small, 

 only one fourth of an inch long. Eggs are laid on the vine by the 

 parent moth, the grub tunneling down just beneath the skin of the stalk. 

 Or eggs may be laid on potatoes that are not entirely covered with 

 earth. Further damage goes on after the potatoes are dug. 



^-j Control consists in cleaning up related 



weeds, prompt removal of wilting vines, 

 jP destruction of the vines after digging, and 



immediate sorting and fumigation of the 



tubers. 



The Cabbage-maggot {Pegomya brassicoe 

 Bouche) 



The roots of cabbage, cauliflow^er, turnip, 

 and radish are seriously injured or destroyed 



Fig. 84.— Work of the Cab- 

 bage-maggot. Original. 



Fig. 85. — Cabbage-maggots on cabbage 

 root. Enlarged. Original. 



