Hydroponic culture evolved from the water, which is a method of growing crops in the laboratory. In this method, plants were grown in nutrient solution or solid objects such as quartz sand flowing nutrient solution.
Based on the plant medium is used, there are three methods of hydroponics, the water culture, sand culture, and culture of porous materials.
In Indonesia berhidroponik with sand and porous material culture of the most widely practiced, because the treatment and the treatment plant is not so complicated. In Japan, water culture method more developed, has been available for all modern facilities.
In water culture method, plants cultivated in containers filled with water. Usually the roots of plants immersed in water containing nutrient solution. In order for plants to grow well, the oxygen content in the planting medium should be sufficient to menyuplainya continuous flow through the air. For ease of supply, there is a solution to flow with standing crops in rockwool aerasinya had enough. Similar system is known as NFT (Nutrient Flow Technique). The degree of acidity (pH) of water retained 6-7, to maintain the balance of the amount of anions and cations are soluble therein.
Culture method of sand and porous media culture is almost the same technique. The difference lies both on the type of planting media only. In sand culture media used in sand. Porous media culture using broken tiles, pebbles, pieces of red stone and pumice stone. All media that only serves as the support of plants and water solution and the successor of excessive or unnecessary plants. Therefore, plants must be supplied nutrient solution continuously. Given nutrient solution containing all nutrients required for plant growth, usually called salt fertilizer.
Basically, all plants can dihidroponikkan, except perhaps succulent plants that are less resistant high humidity. Medium pot is good for berhidroponik made of plastic. Clay pot is not good, because it absorbs water and invite mildew.
Hydroponic plants require meticulous care. Exact quantity and full of nutrients or fertilizer salts given berhidroponik determine the success or failure.
Hydroponic crops can provide high productivity, but efficient in the use of land. Investment climate is not affected, so that business can be planted anytime and anywhere. Business hydroponic planting is very helpful for greening the environment in areas that do not allow for traditional farming, such as in large cities which have been extremely limited and many concrete buildings, office buildings and skyscrapers, as well as areas that lack water supply.Source: Trubus - TH XXV - JULY 1994