- 6 - 

 Apples and Fears 



Del. Botryosphaeria Rot of Apple in Storage . To obtain infor- 



mation on (l) life history of the causal organisms, Botryos- 

 phaeria ribis . on apples entering, during, and after cold 

 storage; (2) development of rot under cold storage and post- 

 storage conditions; (2) control of rot by treatment of apples 

 before entering and when leaving cold storage, 

 PI. Path. 16-P 



Del, Apple Fruit Rots . To obtain more information on the life- 



histories of the causal organisms, and to develop effective, 

 economically sound control measures. 

 PI. Path. 43-P 



111. Inheritance and Breeding of Conmercially Important - 



Characters in the Applet To (1) develop comnercial varieties 

 with a higher level of disease resistance adapted to Illinois, 

 ripening at different seasons and suited to specific purposes; 

 and (2) study the inheritance of characters, 

 Hort. 65-323 



Maine Organic and Other Fungicides as Spray Materials for 



Apples . To evaluate organic fimgicides as to scab control 

 and such side effects as chlorophyll content, tree growth, 

 yield rate, fruit quality, compatibility, and residual effects 

 in the soil. 



PI. Path. 29 



Mo, Pesticides for Disease Control and ITieir Effect on Fruit 



Finish in Apple's^ To (l) test several antibiotics in two 

 concentrations and in different formulations for control of fire 

 blight on apples and pears; (2) determine effectiveness of 

 zineb and captan against cedar rust; (3) determine value of lead 

 arsenate in control of sooty blotch and extent to which disease 

 can be controlled by beginning spray applications after disease 

 shows; (4) determine compatibility of phenyl mercury - protective 

 fungicide combinations "from standpoint of spray injury and control 

 of apples scab; and (5) determine effect of several more efficient 

 fungicides on fruit finish of apples with the view of developing 

 safe spray programs which are efficient and economical, 

 Hort. 232 



N. H. Virus Diseases of Apple Trees . Survey virus diseases and 



similar disorders of apples in State, and learn by transmission 

 studies if disorders are due to viruses; (2) develop an accurate, 

 acceptable method for indexing apple trees; learn (3) properties 

 of viruses involved, including methods of transmission, and 

 relation to other fruit tree diseases; (/») ecc«iomic losses due to 

 viruses and related diseases; (5) virus content of bodystocks or 

 interpieces and rootstocks used in hardy bodystock trees, 

 Bot,, Hort, 119 (NE-IA) 



