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. 
Control consists in cleaning up related 
weeds, prompt removal of wilting vines, 
destruction of the vines after digging, and 
immediate sorting and fumigation of the 
tubers. 
The Cabbage-maggot (Pegomya brassice 
Bouché) 
The roots of cabbage, cauliflower, turnip, 
and radish are seriously injured or destroyed 
| 
Fic. S4.— Work of the Cab- Fic. $5. — Cabbage-maggots on cabbage 
bage-maggot. Original. root. Enlarged. Original. 
