- 1*5 - 



VII. Tobacco Insects 



Fla. Influence of Cultural Practices on the Incidence and 



Control of Insect Infestations in Flue-Cured Tobacco . Learn 

 influence of crop rotation, irrigation, fertilizer, and soil 

 fumigation on kinds and numbers of insects attacking flue- 

 cured tobacco, and develop methods of prevention and control. 

 Ent., Agron. 7&*0 



Ky. Control of Subterraneous Insect Pests of Tobacco Plants . 



To determine phototoxicity, possible stimulating effect, 

 method of application, as well as the insecticidal action of 

 some of the new organic insecticides for the control of 

 wireworms, cutworms, and white grubs. 

 Ent., Bot. k$l 



Ky. Control of Tobacco Hornworms . To develop new or 



improved insecticides for the control of Protoparce 

 sexta Johanssen and Protoparce quinqu i.ma culat a Haworth. 

 Ent.,- Bot. k$Q 



Ky. Control of the Green Peach Aphid, Myzus Persicae (Sulz.), 



on Burley and Dark Tobacco . To determine the relative 

 effectiveness of new organic insecticides or combinations of 

 insecticides in control of green peach aphid on tobacco. 

 Ent., Agron. k60 



N. C. Insecticidal Control of Insects Attacking Flue-Cured 



and Burley Tobacco . (1) To evaluate the use of insecticides 

 for the control of tobacco insects. (2) Improve application 

 methods. (3) Learn relation of insect injury to yield and 

 quality of tobacco. 



Ent. kf Coop. ARS 



P. R. Biology and Control of Tobacco Insects , (l) Obtain 



biological data on important insect pests affecting 

 tobacco as flea beetles, tobacco aphid, and the tobacco 

 horn worm. (2) Develop control measures. 

 Ent. 113 



