Tag: mineral nutrition in plants

Solid medium culture is where plants or micro organisms are grown on a solid support like agar gel, etc.

The produce from hydroponics has longer shelf life as they are nutritionally superior to the normal plants. They are given nutrition directly into the solution and they hence direct all their energy into their growth and development instead of trying to find nutrients.

Culturing of plants in soil less medium is called hydroponics. Plants are raised in small tanks. They are 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. Hydroponics is useful in areas having thin, infertile and dry soils. Through this technique out of season fruits and vegetables can also be grown.

Growing plants in a nutrient solution in absence of soil is called hydroponics. This technique was pioneered by Julius Von Sachs. It is also called soilless cultivation.

Solution culture is being used for raising flowers and vegetables. This soil- less production of plants is called hydroponics. Plants are raised in small tanks. They are filled up with solution containing appropriate quantities of all mineral elements. The solution is changed from time to time.

 A.Aeroponics is growing a plant in air or mist environment.This technique is gaining significance in developing space foods because it do not require soil to grow the plant.

Aeroponics is a method of growing plants with their roots suspended in the air in a grow chamber. The chamber contains the water-based solutions that is used to promote healthy growth in the plants. Water is pumped from the reservoir into the mirco-jet nozzles which distribute the nutrient solution to the roots at definite intervals. This is an enclosed system i.e. whatever does not get absorbed by the roots falls back down into the solution chamber and gets cycled through again. The microbes on the plant are in an oxygen-rich environment. This allows the microbes time to digest the nutrients and to make them immediately available for the plant’s use. Well-circulating CO2 in the room also enhances growth. Thus the correct answer is option A.

Aeroponics is a soilless method of growing plants. It is done in an enclosed or semi-enclosed chamber. Thus disease transmission is reduced. No land area for plant growth is required. Hence it reduces labour step. It is cost effective because the nutrients that are not absorbed by the roots during a spraying session fall back into the reservoir. Thus the correct answer is option D.