Hydroponics is a method of growing plants bed detached (no soil ) and water based.
Most hydroponics systems are closed systems in which water with nutrients rectangle continually in order to take advantage of the water and fertilizer optimally. A well-fed water solution is used as a medium that provides all essential plant nutrients.
You can use organic fertilizer solution but the vast majority of systems have use of mineral based fertilizer that provides balanced plant nutrients, macro and micro elements.
In hydroponics there are different methods and types of systems, the most notable:
NFT- nutrient film technic
Growing in pipes with minimal thin film of water. In this method we plant the seedlings in planting holes diameter within the pipe when well-fed water flowing at the bottom of the tube in a thin stream and nourish the roots of plants. This method is widely accepted as a growing method.
For commercial construction is relatively easy, but controlling it more difficult and requires expertise and greater attention.
DWC – deep water culture
In this method we use a relatively large body of water where the roots of the plants sit fully in a well-fed water solution. Fans water using air blower, thus not making the root in the roots as we know from plants that were irrigated too much.
This method has a number of different ways in which you can grow, outstanding ? Amonge them are:
- Floating rafts – lifting the plant on polystyrene floating on the water by using water recirculation air blower and water pump
- Kratki Method – lifting the plant on polystyrene and creating a lower water level, creating a space that allows the aeration the roots. This method saves the need to use of air blower and water pump.This method is also highly commercially acceptable because the changes made to a large water body are more moderate and more balanced. This method is also very economical in water.
F & D – flood and drain
In this method we flood the growing bed in well-fed ? and then drain the water fast. The purpose of this action is to bring air into the root zone. Flooding and draining is conducted by using an electric timer bell or deck mechanism.
In aeroponics there are several methods all of which use different methods of water distribution: misters, sprayers, Fugger. All methods are based on the roots hanging in the air in a very humid environment.
Advantages and disadvantages
- Water savings – up to 80% savings amount of water
- More vegetables per unit area – saves more in place because all the nutrients and water come directly to plant roots and so they do not need to develop a large root system as in the soil. Allowing us to plant the plants in density and in addition you can take advantage of vertical space and plant in height.
- Shorter growing cycle compared to growing in the soil
- Systems can be constructed everywhere: on the terrace, on the roof or in the garden or even indoors with artificial lighting
- Control of food quality and quantity of pesticides in
- Reduction of number of pests
- Easy picking
- Not dependent on the seasons
- No need for weeding
Relatively high construction cost
Some systems ? extreme climate sensitivity and ? power cuts