The knowledge of ecology and epidemiology of rhizomania is particularly useful to understand the means and practices able to limit or avoid its further diffusion. Some promising methods of biological control using coexisting and non-pathogenic organisms could potentially help improve the action of the not completely effective genetic resistances. This integrated protection would be valuable, especially in the even more frequent development of resistance–breaking strains in the BNYVV, where the known types of resistance, alone or in combination, seem to have lost part of their original ability to protect the crop. Therefore, further efforts will be needed to discover new traits likely still present in the wild species of the genus Beta. The availability of large collections of germplasm stored in the International Beta gene-banks should ensure the enhanced efficiency of genetic resistance by means of conventional and marker-assisted selection methods. Some almost immune transgenic varieties seem already to be waiting for release where and when it will be possible. The introduction chapter describes briefly the sugar beet crop, the more common diseases, and the damage caused by rhizomania. The following chapters discuss biological properties of the causal virus, BNYVV, and its vector, Polymyxa betae, and their interactions with the environment and the host-plant. In particular, the great advances in research of the molecular biology of BNYVV should be noteworthy, which have been established by a wide range of the most modern methods. Recent work focused on the genetic diversity and evolution of BNYVV is moving forward our understanding of the dramatic worldwide epidemics of rhizomania. Newly developed molecular techniques also lead to practical applications, such as quantification of inoculum in ecological and epidemiological research.

D.A. Cooke and R.K. Scott Sugar beet is one of just two crops (the other being sugar cane) which constitute the only important sources of sucrose - a product with sweeten ing and preserving properties that make it a major component of, or additive to, a vast range of foods, beverages and pharmaceuticals. Sugar, as sucrose is almost invariably called, has been a valued compo nent of the human diet for thousands of years. For the great majority of that time the only source of pure sucrose was the sugar-cane plant, varieties of which are all species or hybrids within the genus Saccharum. The sugar-cane crop was, and is, restricted to tropical and subtropical regions, and until the eighteenth century the sugar produced from it was available in Europe only to the privileged few. However, the expansion of cane production, particularly in the Caribbean area, in the late seventeenth and the eighteenth centuries, and the new sugar-beet crop in Europe in the nineteenth century, meant that sugar became available to an increasing proportion of the world's population.

Sugar beet, alongside sugar cane, is the main source of sugar across the world. Grown widely in Europe, North and South America, Asia and parts of North Africa, the crop is at the core of a multi-billion dollar global industry. A. Philip Draycott has gathered 32 international experts to create this defining text, providing a comprehensive review of the latest research in a clear and accessible form, providing the reader with: Definitive account of this major world crop Coverage of all aspects of successful sugar beet growing Over 2,500 references from international literature Colour images to assist in the identification of sugar beet pests, diseases and nutrient deficiencies All those involved with the crop, including growers and processors, sugar beet and sugar organisations and society members will find this book to be an invaluable resource. Agricultural and plant scientists, food scientists and technologists and all libraries in research institutions where these subjects are studied and taught will find it a valuable addition to their shelves.

Pest and Disease Management Handbook updates the 3rd edition of the Pest and Disease Control Handbook (1989). The structure of this important new book differs in several respects, acknowledging the advances that have been made in integrated crop management and the trends towards the more rational use of pesticides. Fully revised and up-to-date, the book commences with a new introductory chapter covering the principles of pest and disease management. Following chapters, each written by acknowledged experts in the field, cover a group of major temperate northern hemisphere crops. As well as comprehensive details of pest and disease management strategies, each chapter also includes a classification scheme for the cited pests and diseases. This important publication is a vital tool for all those involved in the crop protection / agrochemical industry including business managers, entomologists, agricultural scientists, plant pathologists and those studying and teaching BASIS courses. As an important reference guide for undergraduate and postgraduate students studying agricultural sciences, applied entomology and crop protection, copies of the book should be available on the shelves of all research establishments and universities where these subjects are studied and taught. Pest and Disease Management Handbook is published for the British Crop Protection Council (BCPC) by Blackwell Science. BCPC is a registered charity having the principal objective of promoting the development, use and understanding of effective and sustainable crop protection practice. Dr David V Alford, based in Cambridge, UK, is a member of the BCPC board, with many years' experience working as a government entomologist.