INSECT PESTS 



225 



The recommended practice for control of corn earworm in the Ala- 

 bama-Florida-Georgia area is applications of 2.5 percent DDT at 7- to 

 10-day intervals in a regular dusting program for control of insects and 

 diseases ( 160) . Where infestations of last-instar larvae are found 5 per- 

 cent DDT, 10 percent toxaphene, or cryolite should be used. Infestations 

 which occur within 4 weeks of harvest should be c9ntrolled with cryolite 

 if the vines are to be used for hay. 



Potato Leafhopper 



Importance. The potato leafhopper, Empoasca fabae (Harr.) may 

 attack peanuts wherever they are grown commercially in the United 

 States. The related species Empoasca facialis Jac. is reported on peanuts 

 in South Africa (107) ; E. solana DeLong occurs on peanuts in Hawaii 

 (76) and E. flavescens (F.) on peanuts in Dutch East Indies (89)., 



In addition to injuring peanuts, E. fabae attacks a wide variety of 

 plants including potato, bean, clover, alfalfa, soybean, eggplant, rhubarb, 

 cotton, dahlia, apple and many other plants. Several common names 

 have been used for this insect, each referring to a host plant. It might be 



Figure 2. Leafhopper damage to peanut leaflets. (Upper leaflet normal; two lower 

 leaflets damaged.) 



