CONTENTS OF BULLETIN No. 189 



PAGE 



Introduction 283 



General Historical Account 283 



General Characters of Ehizoctonia 286 



Distribution of Ehizoctonia in the United States 292 



Distribution of Rhizoctonia in Canada 306 



Distribution of Rhizoctonia in South America and the West Indies 306 



Distribution of Rhizoctonia in Europe 306 



Distribution of Rhizoctonia in India and Australia 308 



Plan of Procedure " 308 



Symptoms of Rhizoctonia Disease on Various Hosts 308 



Inoculation Experiments 337 



Discussion of Inoculation Experiments 358 



Growth on Media 364 



Measurement of Mycelial Cells 370 



Soil Survey of Rhizoctonia 372 



Parasitism of EJiizoctonia Solani Kiihn 375 



Summary 376 



Appendix 378 



Bibliography 386 



