- 15 - 



Pa. Factors Affecting the Keeping Quality of Cut Flowers , 



To learn (l) effects of chemical preservatives, growth 

 regulators, and pH levels of solution on keeping quality of 

 cut flowers at room temperature; (2) influence of humidity, 

 air temperature, air movement, ethylene, and CO2 accumulation 

 in storage chambers on subsequent keeping quality of cut flowers, 

 Hort, 1280 



Disease Control 



Calif, Insect Vectors and Their Relation to Virus Diseases of 

 Ornamental Plants , To (1) study insect vectors, properties, 

 host range and symptoms of nasturtium viruses in order to 

 distinguish them and evaluate their respective incidence and 

 importance; and (2) determine the insect vector of orchid 

 mosaic virus, projDerties of the virus and its relation to 

 such vectors, 



Ent, Parasitol, 1365-C 



Hawaii Bacterial Diseases of Orchids' mjbhe. Territory of Hawaii , 

 (1) Characterize diseases on the various genera and species of 

 orchids; (2) identify causal agents; Learn (3) host ranges; (4) 

 environmental factors necessary for infection and development 

 of diseases; (5) practical means of prevention and control, 

 PI. Path. 701.4 



La. Cause and Control of Root. Stem, Leaf, and Flower 



Diseases of Certain Ornamental Plants , To study the 

 diseases of ornamental plants and methods for their control, 

 in answer to demand for information in Louisiana and the 

 South on this subject, 



PI, Path., Hort. 511 



Md. The Nature and Control of Root Rots Involved in Decline 



of Boxwood and Other Woody Ornamental Plants in Maryland . 

 Learn if decline and death of boxwood and other woody oma — 

 mentals is caused primarily by a soil-brone organism or a 

 fungus-nematode complex. 

 Bot. J-99 



