172 



INJURIOUS INSECTS OF 1904. 



In using any of the above remedies, or, in fact, remedies for any 

 insect, each farmer or gardener must be guided in making his choice 

 by the conditions existing with him. Some of the above, for in- 

 stance, would not seem practicable to one farmer or gardener, while 

 they would exactly suit the conditions existing with another. It 

 is the policy of the Entomologist to give as many good remedies as 

 possible in each case in order to allow of a choice. 



Wire Worms: Frequently abundant in sod land, and troubling 

 crops following sod. Fall plowing as for the cut worm, and re- 

 peated several years in succession, is desirable, since they live 

 more than one year in the larval stage. The writer has trapped 

 them in a patch of beans, by sticking pieces of potato on slender 

 sticks eight inches long, and burying the potatoes three inches near 

 the roots of the bean plants, examining the potatoes every few days 



Fig. 163. — Cabbage Maggot, Phorbla brassiccr: a, Laiva; b. Pupa; 



c. Antenna. From Riley. 



Adult; J, Its head; 



and killing the wire worms found feeding thereon. This, of course, 

 is not practicable for field crops. Rotation of crops as far as pos- 

 sible is desirable. The adult insects may be attracted to poison 

 baits in the spring. Certain commercial fertilizers are recommend- 

 ed," but are not altogether satisfactory. The worms are the larvse 

 of Click Beetles, see Fig. yz. 



Cabbage Maggot: The larva of a small fly, boring into roots 

 of cabbage, cauliflower and radishes. Other closely allied flies 

 afifect onions, beans, etc. One market gardener reports having lost 



