19 

 B. Soil Borne Pesta and Diseases 



Ala. The Relationship of Soil Microflora to the Incidence of 



Disease in Plants. To learn relationships between activities 

 of general soil microflora and pathogenicitv of soil-borne 

 plant parasitic microorganisms and to develop biological 

 methods of controlling soil-borne diseases of Alab€Lma crop 

 plants. 



Bot., Plant Path. 56O (S-26) 



Fla. Identify and Distribution of Soil Nematodes in Florida . 



To (1) identify the more common species that make up nematode 

 fauna of Florida soils and investigate their comparative 

 abundance in different soil types and in different regions 

 of the state; (2) provide drawings and other information 

 useful in preparation of keys and lab guides, vrfiich will 

 aid in recognition and study of species most commonly en- 

 countered in Florida; and (3) provide at Gainesville a per- 

 manent collection of nematodes and of plant specimens show- 

 ing nematode injury that can be used as reference material 

 and for teaching purposes. 

 Ent., Soils 695 



Maine The Biology of Low-Bush Blueberry Soils. To investigate 



Ihe influence of various soil-inhabiting organisms on the 

 blueberry plant and effect of cultural practices on soil- 

 inhabitintr orgsuiisms. 



Plant Path., Agron. 51 



Md. Treatment of Soil and Underground Parts of Plants 



for the Control of Pl^nt Diaeaaes. To study the effects 

 of soil treatment with respect to: (l) control of plant 

 diseases and phytotoxic effects on plants; (2) reaction 

 of non-pathogens to treatment and the interrelationship 

 with disease pathogens and plant growth; (3) methods and 

 techniques for introducing treatments into soil or plant; 

 and (4) effects of treatment on soil types. 

 Bot. J-93 Coop. TJSDA 



N.Y, The Fire Blight Disease of Pome Fruits and I"^ Control. 



(Cornell) 1. Influence of Soil and Cultural Conditions on Disease Develop - 

 ment. To determine (l) if soil texture and moisture relations 

 may influence disease development, independent of influence 

 on growth of trees; (2) influence of different nutrient levels 

 and balance on development of disease in trees on soils dif- 

 ferent in type and moisture, and deterftdne effect of varying 

 soil nutrient balance on disease; (3) influence of different 

 cultural practices as to cultivation, sod culture, and cover 

 crops on disease development; and (u) apply information to 

 reduce disease development in commercial orchards. 

 Pomol., Plant Path. 129-1 



