In some greenhouses silicon are used for Substrates. I think it is good because I read a Paper a few weeks ago that said: biological and abiotic stresses such as lack of Nutrition toxicity of heavy metals may be decreased by silicon.

Dear Anil Kumar (IIT scholar)

I glad to know that IIT person is interested in Agriculture. I am giving you some guidelines for your project as under.

Paddy(rice plant ) is aquatic in nature so you can grown it with hydroponics means submerged roots in water. The soil media play crucial role in hydroponics. Ease in water soluble fertilizers will be another parameters. Water requirement of rice plant and necessary fertilizer doze are main parameters for growing rice plant by hydroponics

Thanks Dr. Vallabh chandegara,

As food is the first necessity for life. So we are interested in Agriculture. And from 2012 to 2014 I was SRF in IARI, New Delhi in a project on Soybean in Genetics Division.

I found two suitable media for rice hydroponics - hoagland and knop's media.

and thanks again sir, for your response.

thanks Hajar Bahar Tarvirdizadeh for your response.

There is practically no ideal hydroponic design that universally optimizes for every need/crop. Over the years, however, folks have developed organizing principles that can guide a custom design of a close to an ideal system. A couple of these resources that have always been helpful to me include:

Bugbee B. 2004. Nutrient management in recirculating hydroponic culture. Acta Horticulturae (ISHS) 648: 99-1 12

Vincent P. Gutschick* and Lou Ellen Kay (1991) Nonrecirculating Hydroponic System Suitable for Uptake Studies at Very Low Nutrient Concentrations. Plant Physiol. (1991) 95, 1125-1130