Polytunnels, Greenhouses and Protective Cropping - A Guide to Growing Techniques (Barrett Thady)(Paperback) - diskuze

This comprehensive book covers all aspects of protected horticulture. It discusses the appropriate setting 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
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