I, 
2. 
3. 
4 
CONTENTS 
INTRODUCTION .. 
Helminthosporium on Zea Mays 
History and distribution .. 
The symptoms of the disease 
Etiology of the disease 
Morphology of the parasite 
Cultures : 
Effect of reaction of nates media . oe 
Longevity of the spores of Maize Helminthosporium : 
Relation of parasite to host. Infection and ronionlers 
production 
Cross-inoculation experiments 
Helminthosporium on Jowar (Sorghum vulgare) . 
The symptoms of the disease 
Etiology of the disease 
Morphology of the parasite 
Cultures 
Cross-inoculation experiments 
SUMMARY 
List of illustrations 
