Cultural Control 



Proper cultural practices will help keep horn- 

 worms under control and greatly lessen the need 

 for insecticides. As soon as harvest has been 

 completed, the plant stalks should be cut down. 

 The suckers on these stalks sometimes furnish food 

 for large numbers of hornworms. which over- 

 winter and develop into moths the following 

 summer. Fall plowing reduces the overwintering 

 population of hornworms. 



Where soil erosion is a factor, or where a grower 

 for any reason may so desire, the field may be 

 seeded to rye or some other suitable cover crop 

 after it is plowed in the fall. 



Eggs and newly hatched larvae of the tobacco 

 hornworm. 



Hand Picking 



On small acreages the control of hornworms by 

 hand picking is profitable and should be done 

 whenever practicable. 



Control With TDE Insecticide 



TDE is the most satisfactory of several insecti- 

 cides that are known to be effective against horn- 

 worms, and is the material recommended for 

 controlling these insects on tobacco. It may be 

 applied in either a dust or a spray, depending 

 upon the equipment available. 



