-48- 



Ky. Virus Diseases of Tobacco, with Special Reference to 



Streak . To study the virus that causes streak of tobacco to 

 determine: (l) natural method of spread of the virus, (2) 

 natural host range of the virus, & (3) properties of the 

 virus. 



Agron. 154 



Ky. A Study of the Physical and Chemical Properties of Burley 



Tobacco . To determine physical & chemical properties of bur- 

 ley tobacco as affected by soil conditions, fertilization meth- 

 ods of culture & curing, & varieties & to relate these properties 

 to market grade & to specific use value. 

 Agron. 163 Coop. ARS 



Ky. Control of Subterraneous Insect Pests of Tobacco Plants. 



To determine phytotoxicity, possible simulating effect, method 

 of application, as well as the insecticidal action of some of 

 the new organic insecticides for the control of wireworms, cut- 

 worms, & white grubs. 

 Ent., Bot. 451 



Ky. Control of Tobacco Hornworms . To develop new or improved 



insecticides for the control of Protoparce sexta Johanssen & 

 Protoparce quinquimaculata Haworth. 

 Ent., Bot. 458 



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



on Burley and Dark Tobacco . To determine the relative effect- 

 iveness of new organic insecticides or combinations of insecti- 

 cides in control of green peach aphid on tobacco. 

 Ent., Agron. 460 



Ky. The Development and Use of Chemical Standards of Quality 



for Marketing Burley Tobacco . (1) Develop methods of analysis 

 & sampling procedures for chemical constituents associated with 

 quality of burley tobacco, (2) test feasibility of methods in 

 marketing burley tobacco. 



Agron., Agr. Econ. 1003 



Ky. Transmission of Virus Diseases of Field Crops by Insects 



and Mites . To learn (1) which insects & mites transmit virus 

 diseases of field crops; (2) entomological factors influencing 

 virus transmission of these diseases; (3) host naturally in- 

 fected by selected viruses transmitted by insects or mites. 

 (4) Find new methods & improve & simplify present methods of 

 achieving above objectives. 

 Ent., Bot., Agron. 1010 



