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FIELD CROP INSECTS 

 I. General 



Ala. The Control of Insects Attacking Corn and Grain Sorghum . 



To (1) study factors affecting seasonal abundance of important 

 insect pests; (2) cooperate with plant breeders in selecting 

 varieties and strains resistant to attack, particularly the 

 rice weevil; and (3) develop control measures for use in the 

 field and in storage. 

 Ent., Zool. 314 



Ark. Biology and Control of White Grubs in Arkansas . To make 



a detailed investigation of biology and insect icidal control 

 of white grubs which are most abundant in Arkansas, including 

 the genus Phyllophaga . as well as Cyclocephala . Cotinis . and 

 others. 



Ent. 266 



Colo. Investigation for the Control on Rangeland Grasshoppers . 



(l) Habits and seasonal histories of the following grasshoppers; 

 warrier, Camnula pellucida (Scudder) ; big-headed grasshopper, 

 Aulocara elliotti Thomas; Ageneottetix deorum Bruner; Aeoloplus 

 turnbulli Caudell and Philibostroma quadrimaculata (Thomas), 

 will be investigated in northeastern and southcentral Colorado. 

 (2-4 To learn) (2) influence of overgrazing, drouth, shifts in 

 vegetational features and insecticides on population densities 

 of the 5 species, (3) food preference, feeding habits, and 

 seasonal activity as related to rangeland vegetation, (4) effects 

 of rangeland management practices on grasshopper populations. 

 Ent. 234 (W-37) 



Conn. Factors Affecting The Establishment and Survival of 



Wireworms in the Soil . (1) Learn factors affecting establishment 

 of wireworms in soil. (2) Evaluate relative importance of these 

 factors and their basic operation. (3) Learn factors affecting 

 survival of wireworms in soil. (4) Evaluate relative importance 

 of factors and their basic operation. 

 PI. Path., Soils, Anal. Chem. 313 



Ga. Control of Soil Inhabiting Insects Affecting Field Crops . 



(1) Learn the principal soil inhabiting insects injurious to corn. 



(2) Develop control measures for important soil inhabiting insect 

 pests. (3) Study life history of certain pests as an aid in 

 developing control measures. 



Ent. 71 Coop. ARS 



