20 



Although there is some prejudice against spraying cabbage 

 with arsenicals it is entirely unfounded, for it has been shown 

 that a person would need to eat 28 heads of cabbage at one 

 time, if treated in the usual manner, to secure poisonous effects. 



Attacking Celery, Carrots, Parsnips and Parsley. 



1. Cutworms (see page 9). 



2. Plant lice (see page 11). 



3. Plant bugs (see page 13). 



4. Leaf-eating caterpillars. 



There are several species of leaf-eating caterpillars which 

 attack the above related plants. Those found most commonly 

 are the celery leaf-tyer, Phlyctaenia ferrugalis Hbn., the celery 

 looper, Autographa simplex Guen., and the celery caterpillar, 

 Papilio p)olyxenes Fab. The latter species is a large, conspic- 

 uous green or yellowish caterpillar ringed with black. All are 

 controlled in the same manner. 



Control. — Hand picking of the caterpillars is successful in 

 small gardens. In larger areas spraying with arsenate of lead 

 combined with a resin-soap sticker is most effective (see page 4) . 



Attaching Siveet Corn. 



1. Cutworms (see page 9). 



2. White grubs (see page 9). 



3. Wireworms (see page 10). 



4. Seed corn maggot, Chortophila (Pegomya) fiisciceps Zett. 

 This insect causes considerable damage to the seeds and 



seedlings of beans, peas and corn. The maggots tunnel in the 

 seed, sprouts and stems of these plants which, when attacked, 

 fail to develop. The life history, habits and appearance of this 

 pest are similar to those of the cabbage root maggot. 



Control. — No efficient remedy or preventive measure is 

 known. Seeds should not be planted during a period of cold, 

 damp weather. Use mineral fertilizers where possible, as plants 

 in soils containing much humus are most subject to attack. 



5. Stalk borer, Papaipema nitella Gn. 



Potato and corn plants, together with a number of other 

 plants, and weeds often suffer severelv from the attacks of this 



