2A6 



with new concepts in their use we can develop methods of regulating many of 

 the major insect populations to the extent that all damage can be prevented, 

 in a way that will avoid or greatly minimize hazards to other forms of life 

 in the environment, and at a continuing cost that will be much lower than the 

 procedures we now follow. An all out approach to insect population control 

 will not be practical or justified for all the destructive insects. But in 

 advocating research on this approach, I have in mind some of our key insect 

 species-those that are responsible for our greatest losses; those that now 

 require expenditures in terms of millions for control year after year; and 

 those that are now responsible for the most extensive use of insecticides. 

 I have in mind such insects as the cotton boll weevil ( Anthonomus grandis 

 Boheman) , screw-worm ( Cochliomyia hominivorax ( Coquerel ) , corn earworm 

 ( Heliothis zea (Boddie)), tobacco hornworm (M anduca sexta (Johannson)) , 

 'tobacco budworm ( Heliothis virescens (F.)). cabbage looper ( Trichoplusia 

 ni (Hubner)), codling moth ( Carpocapsa pomonella L.), sugarcane borer 

 ( Diatraea saccharalis (F.)), Euporean corn borer ( Ostrinia nub.'lalis 

 (Hubner)), pink bollworm ( Pectinophora gossypiella (Saunders)), tropical 

 fruit flies (Tephretidae) , cattle grubs ( Hypoderma spp.), face fly Musca 

 autumnalis De Geer), and perhaps other important agricultural pests that 

 in the aggregate take a major toll or represent major threats to our 

 agricultural resources. If we can eventually take care of some of these 

 major pest problems by the total population control concept without adversely 

 affecting the beneficial insect complex in the environment, we would at the 

 same time make it possible for natural biological agents to do a better job 

 controlling other important insect problems. 



