- 31 - 



Mass. Properties and Importance of Some Fungous and Virus Diseases 

 of C Carnations and Their Control Measures , To (1) determine 

 fungous and bacterial pathogens in commercial propagating stock, 

 including determination of (a) prevalence of pathogens in 

 commercial propagating stock, (b) actual value of a culturing 

 technique as a means of detecting and eliminating infection, and 

 (c) whether method and effort involved in culturing can be 

 shown to represent an improvement over current cultural patterns 

 as may be shown in measurable differences in disease and yield 

 of flowers; (2) determine effectiveness of various chemicals 

 upon control of Fusarium dianthi . determining action both as 

 therapeutants and as soil treatments; (3) determine effect of 

 carnation virus disease upon quantity and quality of flowers 

 produced; (k) determine properties of carnation mosaic virus 

 as follows: (a) effect of H-ion concentration on stability of 

 carnation n.^saic virus, (b) optimal pH for inoculation by 

 carborundum technique, (c) concentration of carnation mosaic 

 virus in diseased plants, (d) effect of aging upon infectivity 

 of carnation virus, and (e) thermal inactivation time of 

 carnation mosaic virus; and (5) evaluate diagnostic tests for 

 detection of virus infected plants. 

 Bot. 23 



Minn, Diseases of Ornamental Plants . 

 PI. Path. & Bot. 2205 



Miss. Studies on Diseases of Ornamental Plants in Mississippi . 



To (l) ascertain and define major disease problems of importance 

 to ornamental culture and study inciting agents concerned; and 



(2) learn practical measures for control of these diseases, the 

 type depending on nature of the disease; including determination 

 of phytotoxicity and compatibility of various fungicides on 

 ornamentals, evaluation of various fungicides for control of 

 more prevalent diseases, development of disease resistant 

 varieties, etc. 



Hort., PI. Path. HK-5, HL-7 



Mont. Diseases of Selected Ornamental Plants in Montana , To 

 give special attention to the diseases of economic crops 

 such as sweet peas, asters, gladiolus, geraniums, stocks 

 and carnations, including (1) nature of the disease; (2) 

 predisposing factors of susceptibility of th« hosts; and 



(3) control of diseases. 

 Bot. & Bact. MS 904 



