DISEASES OF VEGETABLES 



General 



Ala. Breeding of Certain Vegetables for Better Adaptation to 



Southern Conditions. With Particular Reference to Home and Market 

 Garden Types . To develop in certain designated vegetables, home, 

 market garden, and commercial varieties, which have resistance to 

 diseases commonly troublesome in the South, and which are generally 

 adapted to the soil and climatic conditions of this region. 

 Vegetables will include tomatoes, peppers, lima beans, English 

 peas, and Southern peas. 

 Hort. 412 



Ariz. Virus Diseases of Vegetable Crops. Including Melons in 



Arizona . (1) Etiological studies on several viruses of melons, 

 potatoes, celery, and lettuce; (2) studies of weed-host ranges, 

 overwintering phenomena, etc., of viruses and their vectors; 

 (3) investigations of now-used crop rotation; and (4) unique 

 ecological factors (climatic and edaphic) found only in this 

 area, and their relation to prevalence of certain viruses of 

 vegetables. 



PI. Path. 286 



Ariz. Control of Root-Knot of Vegetables . Find means of 

 controlling root-knot nematodes. 

 PI. Path. 406 Coop. ARS 



Ariz. The Control of Mildews of Muskmelon and Lettuce . (1) 



Evaluate fungicides as means of controlling powdery mildew of 

 muskmelon and downy mildew of lettuce; (2) study any other means 

 of controlling these diseases. 

 PI. Path. 408 



Del. Control of Pepper and Squash Diseases . To study (l) etiology 

 of anthracnose ( Colletotrichum nigrum ); (2) epidemiology and 

 control of anthracnose and bacterial leaf spot (Xanthomonas 

 vesicatoria ) ; (3) breed for disease resistance. 

 PI. Path. 19P 



Del. Development and Control of Vegetable Diseases Under 



Irrigation . To determine influence of overhead irrigation on (1) 

 incidence and severity of various diseases of vegetable crops 

 known to be problems in Delaware; and (2) effectiveness of 

 recommended fungicide spray and dust schedules. 

 PI. Path. 56P 



