294 PEST CONTROL Diagnosemethoden, Diagnose yon Krankheiten und Beschiidigungen an Kulturpflanzen by D. Spaar, H. Kleinhempel and R. Fritzsche, Springer-
Verlag GmbH & Co. KG, Heidelberger Platz 3. Postfach D-1000 Berlin 33, 1984, 198 pp. Hardback Illustrated Price DM59.00, US$ 21.50, ISBN 3-540-13313-5. The presupposition for adapting control managements to plant pathogens and pests is a very thorough knowledge of the causes of the crop damage. In order to study these and to make correct diagnosis, useful methods are needed. These have been developed in research institutes all over the world and reported in different publications. Also, many books have been published handling plant pathological and entomological methods, often very thoroughly, but these have mostly been specialized in narrow sectors such as mycology, virology, nematodology etc. This book contains descriptions of methods concerning diagnosis of both abiotic and biotic plant damaging factors such as air pollution, fungi, bacteria, viruses, nematodes, mites etc. The instructions begin with the collection and sending of samples continuing with the isolation and identification of plant pathogens and pests. The study of viruses and mycoplasma-like organisms is limited to the aspects of most important serological and transmission methods. The isolation of fungi and bacteria is covered in general, including instructions for preparation of both common and more specialized growth media as well as instructions for staining and preparing samples for microscopy. The infection studies showing the pathogenicity of the isolates are explained. Also, the most useful methods for isolation and identification of both free living and cyst nematodes are given. The rearing and preparing of mites and insects as well as some methods to verify the resistance against acaricides and insecticides are described. The methods in this book for diagnosis of plant pathogens and pests are well chosen, distinctly presented and carefully considered and there are many drawings to illustrate the directions given. This book is highly recommended for students, researchers, inspectors and advisers working in the field of plant protection. PROFESSOR EEVA TAPIO Department of Plant Pathology University of Helsinki Viikki SF-00710 Helsinki 71 FINLAND