CONTENTS 



PAGE 



Host considerations 381 



The disease 381 



Names 381 



Historical 381 



Geographical distribution 382 



Economic importance 383 



Symptoms 384 



On the leaves 384 



On the twigs 393 



On the fruit 394 



Etiology 394 



Historical 394 



Nomenclature 395 



Pathogenicity 396 



Morphology 398 



Cultural characters 399 



Life history 413 



Inoculation 413 



Incubation 418 



Infection 419 



Effect of environmental factors 421 



Varietal susceptibility 422 



Control 427 



Exclusion 427 



Eradication 428 



Protection 429 



Spraying 429 



( 'ultivation 431 



Immunization 434 



Recommendations for control 434 



Literature cited 435 



377 



