GENERAL PLANT PATHOLOGY 



Plant Disease Information 



Conn. The Dynamics of Dissemination of Plant Diseases. To (l) 

 study infectious distribution of diseases which are spread by 

 various vectors; (2) study relation of plant, pathogen, and 

 environment to appearance and distribution of disease and inter- 

 action of these factors with one another; (3) analyze distribution 

 so that one can deduce probable vector responsible for spread of 

 a disease; and (4) analyze relation of control practices to spread 

 of disease in a population of plants. 

 Climatol. 701 



Conn. Weather, Spore Dispersal, and Disease Forecasting . To learn 

 (1) effect of season and weather on spore discharge; (2) relation 

 between weather and infection from spores; (3) reduce cost and 

 residues and increase effectiveness of fungicide application by 

 elimination of unnecessary sprays and proper timing of necessary 

 ones. 



Climatol. 702 (NE-35) 



Del. The Application of Climatology to Delaware Agriculture . To 

 learn (1) frequency distributions of rainfall, temperature and 

 humidity for major crop areas of State and probabilities of 

 occurrence of certain weather patterns likely to influence plant 

 growth, disease, insect infestations and efficiency of crop treat- 

 ments; (2) relationships between macroclimatic and microclimatic 

 variables most influential in crop production; (3) learn relation- 

 ship between available meteorological data and crop response, spread 

 of plant diseases and severity of insect infestations; (4) influence 

 of climatic conditions on crop growth, disease and insect infestations 

 and efficiency of crop treatment. 



Hort., Agron., PI. Path., Ent. 14-H (NE-35) 



Hawaii Studies on the Control of the Economically Important Fungus. 



Bacterial, and Nematode Diseases of Leading Crop Plants in the High 

 Rainfall Area of Hawaii . Learn cause, dissemination and control 

 of economically important fungus, bacterial, and nematode diseases 

 peculiar to said region. 



PI. Path., Fruit & Veg. 701.3 



Kans. Fruit and Vegetable Disease Investigations . To (l) investigate 

 cause of the diseases and improve vegetable and fruit crops, 

 especially potatoes, sweet potatoes, cucurbits, tomatoes, raspberries 

 and cherries by obtaining disease resistant selections which are 

 horti culturally desirable; and (2) determine how diseases of these 

 crops may be controlled chemically, by breeding and otherwise. 

 Bot., PI. Path. 130 



