Hydroponics It is a technique of growing plants without soil in a nutrient medium. It was first demonstrated in 1860 by the German botanist, Julius von Sachs. In this method, purified water and mineral nutrient salts are used. Contaminated/dirty/unclean water may infect the plants. Aeration is required for oxygenation and nutrient circulation to the roots. 2.5K views10:29
