This third edition includes summaries at salient points within the first six chapters, dealing with the principles and practice of vegetable seed production. A suggested further reading list is provided at the conclusion of each of the 16 chapters. The general updating of this third edition has included more detail on 'organic' seed and its production, and also considerations on genetically modified organisms. The increased links between vegetables produced from true botanical seed and those predominantly propagated vegetatively (i.e. the resulting planting material which is often referred to as 'seed') have been added to this edition in Appendix 1.