- 47 - 



Minn. 



N. J. 



Blackstem and Associated Diseases of Alfalfa and Other 

 Legumes . To (1) identify various causal agents of the 

 blackstem complex on alfalfa, red clover and other forage 

 crops, and to learn their taxonomic relationships; (2) learn 

 the relative economic importance of the organisms associated 

 with blackstem on the different legume crops; (3) become 

 thorou^ly familiar with all aspects of the epidemiology of 

 the different organisms on the crops- involved, including 

 overwintering, dissemination, and environmental factors that 

 influence infection; (4) search for sources of resistance to 

 blackstem; (5) improve techniques of screening plants and 

 progenies for their reaction to blackstem, and to learn 

 methods of insuring adequate artificial epidemics of blackstem 

 in order to select resistant plants; (6) learn nature of 

 resistance to blackstem, and to learn the mode of inheritance 

 involved; and (?) develop in cooperation with existing state 

 projects means of control of the blackstem complex by breeding 

 resistant varieties, use of chemicals, cultural practices, 

 and other methods. 



PI. Path., Bot., Agron., Genet. 2225 (NC-37) Coop. ARS 



Studies on Diseases of Forage Legumes . Learn (l) reason 

 for rapid decline in stand and yield of alfalfa from year to 

 year, dying out of ladino plantings, poor recovery of red 

 clover sifter first cutting, and means of maintaining production 

 longer, (2) incidence of crown rot, caused by Sclerotinia , as 

 factor in decline of legumes. 



PI. Path., Forage 477 



N. Y. 

 (Cornell) 



Diseases of Forage Crops. — 5. Influences of Plant Disease 



Upon Legume Maintenance in Meadows and Pastures , 

 severity of diseases. 



PI. Path., Hort. 135-5 



To determine 



Ohio 



Control of Forage Crop Diseases with Fungicides . To 

 develop control measures for forage crop diseases through 

 (l) spray application of fungicides, (2) soil and seed 

 application of ftmgicides. 



Bot. 75-2 



Okla. 



Breeding to Improve Native and Exotic Pasture Legumes . 

 To (l) assemble varieties and strains of native and exotic 

 legumes in observation nurseries for preliminary screening on 

 basis of adaptation and performance; and (2) produce new and 

 superior varieties, using best available material for better 

 adaptation, seed and forage yields, quality or disease 

 resistance. 



Agron. 767 (S-12) Coop. ARS 



