INSECT ENEMIES AND PLANT DISEASES 133 



root lice in their nests, the best preventive of injury is to 

 prepare the field for corn by deep and early plowing and 

 repeated discing. This tears up the ants' nests and scatters 

 the root-louse eggs through the dirt, at the same time keeping 

 down the young weeds upon which the root lice live until 

 the corn begins to grow. 



The corn root louse has perhaps worked a greater injury 

 to corn than any other one insect. Every farmer should 



THE COEN BOOT LOUSE 

 Aphis maidiradicis (female) 



study the habits of this insect and make every effort to 

 check its injurious work. 



The Corn Root Worm (Diabrotica longicornis) : The 

 adult of the corn root worm is a beetle; green or yellowish 

 green in color and about a quarter of an inch long. The 

 beetle feeds on the pollen and silk and deposits her eggs 

 in the ground at the base of the stalk. The following spring 

 these eggs hatch out into the corn root worms. 



