The present book provides detailed information on hydroponics techniques, its nutrient solution requirements, disorders of plants (nutrient deficiency symptoms, diseases and other insect-pests), media, root and air environmental requirements, aquaculture & aquaponics systems and their requirements along with the concepts of controlled environment of agriculture techniques such as greenhouses and growrooms. Through environmentally-controlled greenhouses, we can grow anything, anywhere and in any season for fresh supply of eatables, especially vegetables and fruits, vis-