PLOWING TO KILL INSECTS 73 



insect pests that feed upon these plants. Year after 

 year they continue to thrive. 



All insect pests that can be killed with plowing pass 

 the winter either in the trash on the surface of the 

 ground or burrow down below the frost line. The pests 

 that burrow down below the frost line are usually in the 

 larva or grub state. Those that stay on the surface in 

 the trash are mostly full grown insects. 



The stumpy ground, the poor covering of trash, and unevenly plowed 

 ground, are conditions favorable to the growth of insects. 



The numberless varieties of weevils afflicting the south 

 usually pass the winter without food in the rubbish near 

 their feeding ground. They start hibernating at the 

 first frost and quickly come out as the weather warms 

 and then they return as it cools. Weevils do not lie in 

 green rubbish nor do they seem to possess any sort of 

 instinct as to how and where to go to find the cotton fields. 

 Strong winds blow them many miles. Standing stalks 

 of all kinds in infested fields furnish the most favorable 

 conditions for the hibernation of weevils. Obviously if 



