Amazon.com description: Product Description: The purpose of this book is to review many questions associated with hydroponic culture and to offer useful suggestions. The questions related to hydroponic systems, plant varieties, plant nutrition, plant culture, plant disease and pest management, environmental factors, optimum ranges, production and marketing. Recommendations come from experiences over the past twenty years of hydroponic growing. Includes such topics as: nutrition, essential elements, greenhouse site, water, physiological disorders, disease, environmental conditions, harvesting, storing, sterilization and much more. Soft cover - 200 pages.