This book on Sclerotinia deals with the aspects on taxonomy, nomenclature, geographical distribution, economic importance, host range, the diseases caused, symptomatology, disease assessment, reproduction, ultra-structures, pathogenic variability, perpetuation, infection and pathogenesis, biochemical, molecular and physiological aspects of host pathogen interaction, seed infection, disease cycle, epidemiology and forecasting, host resistance and disease management strategies. In addition, laboratory and field techniques developed so far for Sclerotinia have been included. Some newly emerging areas of Sclerotinia research including its application as myco-herbicide, phytoalexin elicitors, hypovirulence, volatile compound imitator, sporigermin production from sclerotia, resistance to fungicides and health hazards due to Sclerotinia diseases have been discussed. The subject matter is vividly illustrated with photographs (macroscopic, microscopic, electron micrographs, scanning electron micrographs), drawings, figures, histograms, graphs, tables and flow charts of techniques which make it more interesting, stimulating, effective and easy to understand by the readers. This is the first ever comprehensive compilation on different aspects of Sclerotinia and will be of immense value for researchers, teachers and students.