This comprehensive book, written by an acknowledged expert, is packed with useful information and is an invaluable reference work that covers all aspects of protected horticulture.It discusses the appropriate siting for a greenhouse enterprise, and covers greenhouse design principles and commercial glasshouses.It also considers cladding materials, the development and use of polythene-clad tunnel structures, and greenhouse energy sources.The greenhouse environment, growing rooms, irrigation, composts and other growing media are examined as well as plant nutrients, fertilizers, pest and disease control, nursery hygiene and much more.