CONTENTS 



Introduction, 



History and distribution, 



Symptoms, 



Causal organism, 

 Morphology, . 

 Occurrence of spore stages, 

 Spore germination and infection experiments. 

 Conditions affecting longevity of urediniospores, 

 Experiments on germination of teliospores. 

 Dissemination, 



Pathological anatomy. 



Varietal susceptibility, 

 Cause of resistance, 



Control, 



Laboratory toxicity tests with copper fungicides. 



Sulfur fungicides. 



Temperature regulation, . 



Selection of resistant varieties. 



Regulation of moisture, 



Use of fungicides. 



Summary of control measures. 



Summary, .... 



Literature cited. 



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