SYSTEM

Circulating system

In circulating system the necessary plat nutrients are mixed in right proportion and taken in a tank .with the help of pump and pipe system nutrition solution is supplied to the crop. Everyday the pump is operated for at list  7 to 8 hours .In this system in first year we have to bear the cost of tray , pump, and pipe  But from the second year it only cost the chemical nutrient .so cost become lower from the second year.

 

Here galvanizing iron made tray is used for media container which is kept in a stand and connected to a tank through plastic pipe. In the tray cork-sheet is placed and holes r made where seedlings are transplanted. After transplanting every day 8-10 hours water is circulated for increasing the oxygen supply in the plant root, after all the roots are in water. Always in the tray at list 6-8 cm water should be kept. Generally every 12-25 days after the water should be changed.

                 

 The pH should be kept in between 5.8-6.5, if pH is more then 7 then iron, manganese-molibdate and other micro nutrient deficiency is observed. In this situation hydrocloric acid (HCL), nitric acid (HNO3) or phosphoric acid(HPO4) is given in the solution in correct proportion. Again if the pH become less then 5.8 then NaOH or KOH is used to maintain the pH. If the EC concentration become higher then 2.5 ds/m then fresh water should me given in the solution. Every day in morning and in afternoon the pH and EC should be checked for making proper combination of pH and EC.

                   

Non-circulating system

In this technique the necessary elements for plant growth are taken in a tray and crops are grown directly. Here there is no need of pump or water circulation. In this way food nutrient mixed solution and the distance of the cork sheet should be at list 5-7cm and in cork sheet there should be 4-5 holes for air movement and continuous oxygen supply. Pot culture is also included in non-circulating system. We can use plastic bucket, water bottle, earthen pot etc for hydroponic culture in our home yard. Here cost is comparatively very low.

Open water system

Research on hydroponic culture  in open water is still going on. Here plants are raised in open water source like pond or lake, concrete tank can also be used in this purpose .In  open water root growth  is very proper so production is high.