Hydroponics refers to the growth of plants in water and sand media. It is also known as test tube farming, tank farming and soil less agriculture.
Commercially hydroponic cultures are
maintained in large shallow concrete, cement,
wood or metal tanks in which gravel and
nutrient solutions are taken. The tanks are
provided with pumps and empty auxiliary tanks
to pump out and circulate the growth solution
and to maintain proper aeration of the nutrient
possible to provide the desired nutrient environment.
The acid-base balance can be easily maintained.
Mulching, changing of soil and weeding are eliminated.
Proper aeration of nutrient solution is possible.
Labour for watering of plants can be avoided.
Tilling is not necessary.