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General
- Hydroponics (from
the Greek words hydro (water) and ponos (labour)) is a method of
growing plants using mineral nutrient solutions instead of soil.
- The two main
types of hydroponics are solution culture and medium culture.
- Gericke
originally defined hydroponics as crop growth in mineral nutrient
solutions, with no solid medium for the roots.
- Most hydroponic
reservoirs are now built of plastic but other materials have been
used including concrete, glass, metal, vegetable solids and wood.
Methods &
Cultivation
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Nutrient Solution Method of
hydroponics allows the plant roots to grow in solution containing
nutrients.
-
Gravel Method of
hydroponics involves the use of clean sand or washed gravel, free of
sand or silt.
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Hydroponics is highly productive and suitable for automation.
- The water culture
method of hydroponics is a system of immersing plants root totally
in a nutrient solution, which is simplest to set up on a small
scale.
Application & Technology
- Aeroponics is an
application of hydroponics without a growing medium, although a
small amount may be used to germinate the seed or root a cutting.
- One of the
potential applications of hydroponics was growing fresh produce in
nonarable areas of the world.
- The hydroponic
application enables powerful accurate and fully automated disease
control, environmentally clean water recycling capabilities,
potentially enhanced plant health, and substantial reduction in
equipment corrosion.
- In hydroponic
application, pumps, lights and ambient heat can warm the reservoir
temperatures, leading to plant root and health problems.
- NFT or Nutrient
Film Technique is the pioneering hydroponics system. This technique
is quite old, however, it remains quite popular among indoor
horticulturist because it's fairly inexpensive to setup and easy to
use.
Market
- In Arizona, there
are more than 25 acres of hydroponic greenhouses.
- The most
successful hydroponic market crops are tomatoes and cucumbers.
- The commercial
hydroponics industry has grown four to five fold in the last 10
years and is currently estimated at between 20,000 and 25,000 ha
with a farm gate value of $US6 to $US8 billion.
- Australia is
ranked in the top 10 of world commercial hydroponic producers.
- Reluctance of
gowers and retailers to market product under a hydroponic label is
one reason why the industry is perceived as being smaller than it
actually is.
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Culture, Production, Gardening, Technology, Applications,
Products, Equipments, Video Clippings, Market
