- 55 - 



Maine Ciiltttral emd Chemical Control of Nematodes on Small 

 Fruits and Vegetables . To learn biology and control of 

 nematodes on strawberries, low-biish blueberries, and truck 

 crops . 



Plant Path. 93 (NE-3i^. See Part I7, section a) 



Maine Identification and Control of the Fungi and Viruses 

 Causing Disease in Low -Bush Blueberries . To (1) study 

 numbers and kinds of virus disease present and determine 

 pathogenicity of fungi isolated from diseased blueberry 

 plants; and, (2) learn what insect vectors are involved 

 euid develop control measxires. 

 Plant Path., Ent, 99 



Mass. Black-Root Rot of Strawberries . To determine the caxise 

 of black-root rot of strawberries and to find effective 

 methods of control, 



Hort. 98 Coop. ARS 



Mass. Small Fruit Disease Investigation . Establishment of 



more practicable and less expensive methods of applying chem- 

 icals. Clarification of most effective time of fungicide 

 applications. Test new fungicides as they are presented. 

 Continue study of role played by oxygen in fruit set and 

 keeping quality. Life cycle and control studies will be 

 made of pathogens caiosing heretofore xuiknown diseases. 

 Investigate eradicant fungicides and chemotherapeutants , 

 Cranberry Sta, 121 



Mich. Strawberry Red Stele Root Rot Disease; To Study Fac - 

 tors of Field Spread and Identification, Resistance, Fhysl^ 

 ology of the Causal Organism, New Methods of Control, and 

 to Test New Selections Developed Through the Breeding Program 

 for Resistance . To (1) develop technique for red stele 

 diagnosis in field during any period of year; (2) investigate 

 methods to learn resistance in varieties and selections which 

 will lead to more rapid technique; (3) study physiology of 

 causal organism which would have direct bearing on breeding 

 and methods of control; (k) evaluate methods of eradicating 

 the disease once present in soil, to aid in reclaiming many 

 infected eireas for strawberry growing; and, (5) determine if 

 selections developed are red stele resistant. 

 Plant Path,, Bot. 8IO 



Mo. Downy Mildew and Black Rot Control on Grapes . To find a 



fimgicide or a fungicide combination that will effectively 

 control both blackrot and downy mildew with little or no 

 phytotoxic effects, 

 Hort, 19^ 



