This book provides practical, up-to-date information that helps in the successful management of diseases on food, fibre and landscape plants for students who do not have a strong background in the biological sciences. It is largely revised to reflect the recent problems in conventional agriculture with an environmental emphasis and to include the latest techniques in biotechnology and genetic engineering. This edition includes information on the more precise indentification of diseases and the pathogens that cause them, the development of epidermics of plant diseases, the application of biotechnology in plant pathology and the use of alternative methods of crop production and disease management. This book should be of interest to agricultural consultants; chemical company representatives; sales personnel; courses in biological sciences and agriculture in high schools; technical colleges.