The world's worst weeds. Distribution and biology.
This is an inventory of the principal weeds of the world's major crops with particular emphasis laid on their distribution, importance and biology. Part I describes some 76 noxious species in detail, with emphasis on the 18 worst in order of their impact on agriculture, and is supplemented by excellent line drawings and world distribution maps. Data are presented on methods of propagation, life history and world distribution by crop. Part 2 discusses 16 of the world's most important crops in terms of the major weeds known to infest them. In addition to compiling and organizing an enormous amount of data, the authors include throughout their material many little-known but fascinating facts about man's principal weeds; for example, Avena fatua was once widely cultivated as a food crop. There is an index of common names of weeds from many languages and an excellent detailed general index of crops and weeds, countries and other aspects. This book will be of value to all who farm large or small acreages anywhere in the world and will have special interest to weed scientists, students of agriculture, extension personnel, professional botanists and herbicide technologists. P.J. Kemp