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Ark. Etiology and Control of Seedling Blights and Boll Rots 



of Cotton * (1) Learn distribution and importance of seedling 

 bli^ts and boll rots of cotton in state. (2) Ascertain 

 virulence of various organisms associated with cotton seedling 

 diseases and boll rots. (3) Study influence of soil types, 

 current cultural practices and previous cropping history on 

 cotton seedling and boll complex. (U) Develop control methods 

 through chemical seed and/or soil treatment, modified cultural 

 procedures and/or varietal resistance. 

 PI. Path., Agron. 422, Coop. USDA 



Calif. Study of the Basic Factors Influencing the Development of 

 Strains or Types of Cotton Resistant to Verticilliiim Wilt . To 

 learn (l) influence of moisture, temperature and nutrition to 

 infection by verticillium vdlt fungus and development of 

 disease in cotton, (2) infection court and progression of fungus 

 in plant in relation to symptoms, (3) different strains of fungus 

 as they are related to development of resistant cotton, (4) 

 source of resistance and study inheritance of resistance. 



PI. Path. 1651, Coop. U. S. Cotton Field Sta., Shafter, Calif. 



Ga. Cotton Breeding . To develop (l) a hi^ yielding cotton vdth 



a staple of one inch or longer \^ich is wilt resistant and (2) 

 new strains or varieties having superior qualities of disease 

 and insect resistance, earliness, and yielding ability combined 

 with special foliage branching, and picking qualities needed to 

 meet the requirements of mechanized farming. 

 Agron., Field Crops 26, Coop. USDA 



Ga. Upland Cotton Breeding for Coastal Plain Conditions . To 



(1) develop high yielding cottons adapted to Coastal Plain area 

 which possess superior fiber qualities, with emphasis on high 

 fiber strength with acceptable levels of yield and other fiber 

 characteristics, and to screen selected lines for resistance 

 to fusfiurium wilt; and (2) study methods of preventing damage to 

 seeds and fibers due to hi^ rainfall and high humidity condi- 

 tions at harvest. 



Agron. 203, Coop. USDA 



La. A Study of Insects. Mites and Nematodes Destructive to 



Cotton and the Development of Economical Means for Controlling 

 Them . To study insects, mites, and nematodes which infest 

 cotton, determine economic importance of the pests, and 

 develop satisfactory and economical methods of control. 

 Ent. 465, Coop. USDA 



