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Miss, Investigation of the Diseases of Cotton and Their Control 

 Under Mississippi Conditions * To (l) develop greenhouse and 

 field techniques to determine resistsmce and susceptibility to 

 certain cotton diseases; (2) investigate seed stocks and sources 

 now available, and those becoming available, for resistance to 

 major cotton diseases, and incorporate any resistance found 

 into types suited to this region and culture; (3) study genetics 

 of resistance; and (4) design and conduct work on other forms 

 of disease control where such control is necessary and appears 

 feasible, 



PI. Path, HL-6, Coop. USDA 



Miss, Inheritance Studies Concerning Yield. Fiber Properties, 

 and Disease and Insect Resistance in Upland Cotton . To (l) 

 classify and isolate as far as possible factors which affect 

 yield, fiber properties, and disease and insect resistance, 

 (2) learn when possible genetic ratios expressed by simply 

 inherited factors and number of factors involved where inheri- 

 tance is more complex; and (3) learn at vriiat stage in cotton 

 development, specific factors are operating to produce end 

 results observed. 



Agron. RRFU-l-c (S-l) Coop. ARS 



Mo. The Diseases of Cotton of Missouri , (l) Learn diseases of 



economic importance and describe those found to be new. (2) 

 Make crop yield loss estimates due to diseases. (3) Learn 

 resistance rating of present breeding lines and varieties to 

 the common diseases of cotton, search for high types of 

 resistance to cooperate with plant breeder in development of 

 new, more resistant varieties. (4) Learn optimum and limiting 

 environmental factors for disease development, search for 

 cultural methods of control and obtain data on etiology, host- 

 parasite relations, and epidemiology of diseases of cotton. 

 (5) Test established and newly developed chemicalis eind 

 antibiotics for possible effective economical control of 

 seedling and mature plant diseases. (6) Study available 

 methods of inoculation for inciting epirhytotics and develop 

 new techniques for the study of the diseases of cotton. 

 Field Crops 322 



