-30- 

 D. Diseases and Insects 



Ala. Control of Cotton Insects . To determine effectiveness of 



new insecticides against the boll weevil & other cotton insects 

 & the effect of controlling various species upon the yield of 

 cotton & to develop a dusting schedule for the control of the 

 major insects attacking cotton. 

 Zool., Ent. 512 



Ariz. Verticillium Wilt of Cotton . To study the complete or 



partial control of Verticillium wilt of cotton. 

 PI. Path. 256 



Ariz. The Biology and Control of Insects Affecting Cotton in 



Arizona . (1) Ecological Studies of Cotton Insects. (2) Life 

 History Studies. (3) Chemical Control Studies. (4) Miscel- 

 laneous Studies* 



Ent., Agron. 383 Coop. ARS 



Ark. Improvement of Insecticidal Control of Cotton Insects . 



(1) Develop better timing of insecticidal applications in re- 

 lation to infestations, weather, & agronomic practices. (2) 

 Learn feeding habits & methods of exposure of weevil to in- 

 secticides. (3) Develop alternative insecticides & control 

 methods for weevils & aphids. (4) Study off-season habits & 

 activities of cotton insects in relation to outbreaks on cotton. 

 (5) Evaluate predator populations & factors affecting them. 



Ent. 333 



Ark. Etiology and Control of the Verticillium Wilt of Cotton in 



Arkansas . To (1) make a thorough study of morphology & physiol- 

 ogy of the pathogen of Verticillium wilt disease of cottonj 



(2) study reaction of the pathogen to various types of commercial 

 & wild cotton; (3) measure degree of resistance of all available 

 selections of upland cotton & other possible breeding material; 

 (4) determine environmental conditions which modify severity of 

 outbreaks of Verticillium wilt of cotton; & (5) devise methods 



of controlling or ameliorating severity of attacks of disease. 

 PI. Path. 334 



Ark. Ecology and Control of Pink Bollworm . To (l) learn prob- 



able future importance of the pink bollworm as a pest of cotton, 

 & (2) develop satisfactory control measures applicable to 

 Arkansas agricultural practices & climatic conditions. 

 Ent. 367 Coop. ARS 



