The biological ways in which diseases of plants, caused by pathogenic microbes can be controlled without the use of chemical pesticides is the subject of this book. The basis of biocontrol (in microbiology, ecology, and plant pathology) is described and many examples of control measures in commercial use or development are given. There is increasing interest in biocontrol from the general public, environmentalists and the major world agrochemical companies, and this easily read text presents recent developments in the subject. The book provides the necessary references and literature...

The third edition of this successful textbook is a lucid introduction to the principles and elementary techniques of statistical reasoning. New materials are included that show the usefulness of computers to biologists; computer analyses of a selection of the examples are presented, using SPSS-X, Minitab and Genstat. The book assumes no mathematical training and uses a minimum of jargon and symbolism. Particular attention is paid to the validity and use of statistical procedures, the interpretation of results, and the meanings of conclusions. Full explanations of statistical methods are...