Rhizobia are bacteria which inhabit the roots of plants in the pea family and fix atmospheric nitrogen for plant growth. They are thus of enormous economic importance internationally and the subject of intense research interest. Handbook for Rhizobia is a monumental book of practical methods for working with these bacteria and their plant hosts. Topics include the general microbiological properties of rhizobia and their identification, their potential as symbionts, methods for inoculating rhizobia onto plants, and molecular genetics methods for Rhizobium in the laboratory. The book will be invaluable to Rhizobium scientists, soil microbiologists, field and laboratory researchers at agricultural research centers, agronomists, and crop scientists.Rhizobia are bacteria which inhabit the roots of plants in the pea family and fix atmospheric nitrogen for plant growth. They are thus of enormous economic importance internationally and the subject of intense research interest. Handbook for Rhizobia is a monumental book of practical methods for working with these bacteria and their plant hosts. Topics include the general microbiological properties of rhizobia and their identification, their potential as symbionts, methods for inoculating rhizobia onto plants, and molecular genetics methods for Rhizobium in the laboratory. The book will be invaluable to Rhizobium scientists, soil microbiologists, field and laboratory researchers at agricultural research centers, agronomists, and crop scientists.I. General Microbiology of Rhizobia.- 1. Collecting Nodules and Isolating Rhizobia.- 2. Observing the Infection Process.- 3. Cultural Properties, Cell Morphology, and Nutritional Requirements of Rhizobia.- 4. Demonstrating Genetic Diversity in Rhizobia Using Patterns of Carbohydrate Utilization and Intrinsic Antibiotic Resistance.- 5. Quantifying the Growth of Rhizobia.- 6. Counting Rhizobia by a Plant Infection Method.- 7. Counting Serologically Specific Rhizobia in Soil and Peat l[