- 2- 



Ga. Control of Insects Attacking Peanuts and Tobacco . To develop 



effective methods to: (1) reduce damage done to peanuts by insects 

 feeding on foliage and on roots and nuts; and (2) learn regular 

 spray and dust schedules for control of budworm, hornworm, and 

 green peach aphid on tobacco. 

 Ent. 215 



Idaho Economic Importance and Ecological Factors Influencing 



Grasshopper Species of Idaho * To (l) survey the area involved 

 to collect grasshopper species and from these collections develop 

 key for identification of species; (2) study life histories of 

 more important range species to determine if parthenogenesis 

 occurs and is a contributing factor to sporadic outbreaks; 



(3) study host plant preferences of important grasshopper species; 



(4) learn ecological factors influencing grasshopper population 

 densities with special emphasis on physical environmental factors; 

 and (5) make range studies to learn damage or destruction of range 

 grasses and other desirable forages and determine grasshopper 

 population densities which would endanger or inhibit natural and 

 artificial range reseeding, with emphasis on burned-over areas. 



Ent. 289 (W-37) Coop.ARS 



111. Migration of the Potato Leafhopper and Its Causes. To learn 



(l) if potato leafhopper, does overwinter in Illinois, (2) time 

 of 1st appearance of leafhopper in various parts of state, corre- 

 late information with similar data from adjacent states and 

 establish migration paths and patterns, (3) relative importance of 

 climatic and other ecological conditions on rapidity with which 

 leafhopper populations develop and spread following arrival of 

 migrants. 



Ent., Agron. 12-314 (NC-29) Coop. ARS 



Kans. The Resistance of Crop Plants to Insect In.iury. To (l) incor- 



porate resistance to one or more insects into agronomically 

 desirable, high yielding new strains of crop plants; (2) study 

 causes of resistance and number and manner of inheritance of 

 genes for resistance; and (3) study effect of resistant varieties 

 on population levels of insects involved. 

 Ent., Agron. 164 Coop. ARS 



Kans, The Use of Chemicals and Cropping Practices for the Control 



of Subterranean Crop Pests . To determine effectiveness of 

 chemicals and cropping practices when used as control measures 

 against insects attacking planted seeds and underground parts of 

 crop plants. 

 Ent. 289 



