Hydroponics
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Hydroponics is a type of horticulture and a subset of hydroculture which involves growing plants, usually crops or medicinal plants, without soil, by using water-based mineral nutrient solutions in an
NASA researcher Ray Wheeler checking hydroponic onions (center), Bibb lettuces (left), and radishes (right)
Inside an ebb-and-flow hydroponic system employing individual buckets connected by fill/drain hoses
A lettuce hydroponic farm in Fellsmere, Florida, USA
The deep water raft tank at the Crop Diversification Centre (CDC) South Aquaponics greenhouse in Brooks, Alberta
Aeroponics
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Aeroponics is the process of cultivating plants in an air or mist environment, eliminating the need for soil or an aggregate medium. The term "aeroponic" originates from the ancient Greek: aer and pon
Lettuce and wheat grown in an aeroponic apparatus, NASA, 1998
Close-up of the first patented aeroponic plant support structure (1983). Its unrestricted support of the plant allows for normal growth in the air/moisture environment, and is still in use today.
Roots inside a High-pressure Aeroponics System
GTi's Genesis Rooting System, 1983