INSECTS, FUNGI, PLANT DISEASES, ETC. 



123 



Kerosene emulsion diluted to one-half its usual strength 

 and applied with the sprayer is also excellent. Tobacco 

 solution is also recommended, and made as follows: 

 Powdered tobacco three pounds, boiled in ten gallons of 

 water for one hour, applied without dilution. 



Cabbage Worm (Plusia brassicae, Riley).— This is one 

 of the common insects injurious to the cabbage and other 

 plants. It is a green 

 worm about one inch 

 long, usually with 

 light stripes down 

 its body; these 

 stripes, however, are 

 sometimes wanting. 

 The worm raises the 

 center of its body in 

 moving over the 

 leaves, and for this 

 reason is called a 

 "looper." The moth 

 flies at night, but 

 may be seen some- 

 times during cloudy 

 weather flying over 

 the cabbage field. 

 The eggs are greenish yellow, and are deposited on the 

 upper or lower sides of the leaves. This insect eats the 

 leaves, and at times bores into the head of the cabbage. 

 There are about six broods during the season. 



Plants Injured. — Cabbage, celery, cauliflower, lettuce, 

 turnips, tomatoes. 



Remedies. — Paris green or London purple will kill the 

 plusia, but these poisons must not be used after the cab- 





' "M:^^^^^^"" 





Fig. 25— Plusia brassicae. a, Moth, b, Full 

 grown larva, c, Pupa with its cocoon, natu- 

 ral size. Howard, Div. Ent. U. S. Dept. 

 Agri. Year Book, 1898. 



