Question

Hydroponics is growing plants

• A. Without soil
• B. Without organic matter
• C. In water
• D. All the above

Answer 1

The correct option is D All the above

Culturing of plants in soil less medium is called hydroponics. Plants are raised in small tanks filled with a solution containing appropriate quantities of all mineral elements. The solution is changed from time to time. It has a mechanism for aeration and circulation. Iron is added as Fe-EDTA otherwise it gets precipitated. EDTA is a chelating agent which keeps the metal ion in the soluble state. There is no need of organic matter. Hydroponics is useful in areas having thin, infertile and dry soils. Through this technique out of season fruits and vegetables can also be grown.

Thus the correct option is D.