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Getting Started - Hydroponics
Getting Started - Hydroponics
Getting Started Everything You Need to Know - Hydroponics.
Please Connect to the Internet When Viewing this Information Package.
Hydroponic gardening can be VERY complicated, with computers and
sensors controlling everything from watering cycles to nutrient strength and
the amount of light that the plants receive.
On the other hand, hydroponics can also be incredibly simple, a hand
watered bucket of sand with a single plant is also a method of hydroponic
gardening. Most hobby oriented hydroponics systems are somewhere
between the two extremes mentioned above.
The "average" home hydroponic system usually consists of a few basic
parts: a growing tray, a reservoir, a simple timer controlled submersible
pump to water the plants and an air pump and air stone to oxygenate the
nutrient solution. Of course, light (either natural or artificial) is also
required.
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Getting Started - Hydroponics
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Hydroponic gardening can be VERY complicated, with computers and sensors controlling everything
from watering cycles to nutrient strength and the amount of light that the plants receive.
On the other hand, hydroponics can also be incredibly simple, a hand watered bucket of sand with a
single plant is also a method of hydroponic gardening. Most hobby oriented hydroponics systems are
somewhere between the two extremes mentioned above.
The "average" home hydroponic system usually consists of a few basic parts: a growing tray, a reservoir,
a simple timer controlled submersible pump to water the plants and an air pump and air stone to
oxygenate the nutrient solution. Of course, light (either natural or artificial) is also required.
file:///D|/new/pages/right.htm [2/8/2004 8:55:23 PM]
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History of Hydroponics
History of Hydroponics.
Hydroponics basically means working water ("hydro" means "water" and "ponos" means "labor"). Many
different civilizations have utilized hydroponic growing techniques throughout history. As noted in
Hydroponic Food Production (Fifth Edition, Woodbridge Press, 1997, page 23) by Howard M. Resh:
"The hanging gardens of Babylon, the floating gardens of the Aztecs of Mexico and those of the Chinese
are examples of 'Hydroponic' culture. Egyptian hieroglyphic records dating back several hundred years
B.C. describe the growing of plants in water." Hydroponics is hardly a new method of growing plants.
However, giant strides have been made over the years in this innovative area of agriculture.
Throughout the last century, scientists and horticulturists experimented with different methods of
hydroponics. One of the potential applications of hydroponics that drove research was for growing fresh
produce in nonarable areas of the world. It is a simple fact that some people cannot grow in the soil in
their area (if there is even any soil at all). This application of hydroponics was tested during World War
II. Troops stationed on nonarable islands in the Pacific were supplied with fresh produce grown in locally
established hydroponic systems. Later in the century, hydroponics was integrated into the space program.
As NASA considered the practicalities of locating a society on another plant or the Earth's moon,
hydroponics easily fit into their sustainability plans. This research is ongoing.
But by the 1970s, it wasn't just scientists and analysts who were involved in hydroponics. Traditional
farmers and eager hobbyists began to be attracted to the virtues of hydroponic growing. A few of the
positive aspects of hydroponics include:
l The ability to produce higher yields than traditional, soil-based agriculture
l Allowing food to be grown and consumed in areas of the world that cannot support crops in the
soil
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Eliminating the need for massive pesticide use (considering most pests live in the soil), effectively
making our air, water, soil, and food cleaner
Commercial growers are flocking to hydroponics like never before. The ideals surrounding these
growing techniques touch on subjects that most people care about, such as helping end world hunger and
making the world cleaner. In addition to the extensive research that is going on, everyday people from all
over the world have been building (or purchasing) their own systems to grow great-tasting, fresh food for
their family and friends. Educators are realizing the amazing applications that hydroponics can have in
the classroom. And ambitious individuals are striving to make their dreams come true by making their
living in their backyard greenhouse, selling their produce to local markets and restaurants.
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General Hydroponics
General Hydroponics.
Crops
Crops produced in today's modern greenhouse ranges are many and varied. They can be loosely
categorized as follows:
l vegetables including tomatoes, cucumbers, fancy lettuces, bell peppers, cherry
tomatoes and a host of minor ones such as radish, melon and strawberry
l cut flowers e.g. roses, mums, carnations
potted flowers e.g. geraniums, azalea, poinsettia, tulip
l numerous bedding plants
Growing Media
Porous, well aerated substrate are used as anchorage for the plants root system and feeding area.
Rockwool and Heydite are the most popular as they are most readily available, and easiest to use and
transport. There are various other mediums which are not as widely used. Click for more info
Growing Techniques
There are different ways to bring water to the plants. Learn more about growing techniques.
l Nutrient Film Technique,
Drip-Irrigation or Micro-Irrigation,
l Aeroponics / Deep Water Culture,
l Flood & Drain,
l Home Hobbyist Systems,
l Passive Planters / Hydroculture.
Carbon Dioxide Enrichment
In an outdoor garden the CO 2 level in the air is about 300 parts per million (ppm). Plants thrive when
they are able to take in a higher level of CO 2 . Growers today monitor their greenhouse CO 2 levels with
special purpose control monitors which in turn operate CO 2 burners or generators to replenish CO2
consumed by the plants.
HAF (Horizontal Air Flow)
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