Etymology: The term hydroponics comes from two Greek terms: “hydros,” meaning water, and “ponos,” meaning work. Hydroponics is the science of growing plants in water without the use of soil. In hydroponics, the plants take up the same nutrients as those grown in soil, though the content can be more accurately controlled because the nutrients are delivered directly to the roots. It is also known as soilless culture.
Hydroponic farming grows plants using mineral nutrient solutions in water, without the use of soil. In traditional agriculture, plants often expend excessive energy in growing roots to search for water and nutrients in the soil, which only exists sporadically. This prevents plants from growing at an optimum rate. In a hydroponic system, the nutrients are delivered directly to the roots; a plant need not use energy to grow long roots in search of water and minerals.