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Information
Hydroponics
With hydroponic technology and a controlled
environment greenhouse, you have the ability to grow premium quality
produce using a minimum of space, water and fertilizer. Hydroponics is
an intensive form of agriculture that can fulfill the consumers demand
for premium produce and provide the grower with a profitable business.
Hydroponics literally means “water working” but, in practical use, it
means growing plants in a nutrient solution without soil. The science of
hydroponics proves that soil isn’t required for plant growth but the
elements, minerals and nutrients that soil contains are. Soil is simply
the holder of the nutrients, a place where the plant roots traditionally
live and a base of support for the plant structure. By eliminating the
soil, you eliminate soil borne disease and weeds and gain precise
control over the plant’s nutritional diet. In a hydroponic solution, you
provide the exact nutrients your plants need in precisely the correct
ratios so they can develop stress-free, mature faster and, at harvest,
are the highest quality possible.
Commercial Hydroponics
Hydroponics FAQ
Getting Started
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Hydroponic tomatoes
grown in perlite.
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A 3-bay, controlled environment
greenhouse
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Hydroponic herbs grown in
NFT (Nutrient Film Technique)
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Hydroponic lettuce grown
in an NFT (Nutrient Film Technique)
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In commercial production, the
three primary growing methods are drip (includes the Dutch
bucket system), NFT (Nutrient Film Technique) and the raft (also
known as float) system. The biggest difference between the drip,
NFT and raft systems is the use of a growing medium. In a drip
system, the plant roots are in a growing medium such as perlite
or rockwool and the nutrient solution is dripped onto the medium
to keep it moist. In an NFT system, the plant roots are in a
channel where a thin film of nutrient solution passes, keeping
them moist but not water-logged. In the raft system, the plants
are floated on a raft that rests on the surface of the water.
The plant roots dangle into the water where they get nutrients
and oxygen.
There are hydroponic growers throughout the United States and
worldwide. Of over 50,000 acres in hydroponic production around
the world, about 1200 of those are in the US. Most of the
hydroponic facilities in the US are family or small business
operations that cover 1/8 - 1 acre, produce premium hydroponic
produce and sell it locally. The smaller operations generally
have the advantage of offering vine ripened, locally grown
produce with minimal transportation cost and damage. It is in
this niche, offering premium produce to a local marketplace,
that a hydroponic grower with less than an acre in production
can earn an excellent profit. Smaller growers can establish
themselves near the marketplace, eliminating the problems and
costs of long-distance transportation.
In addition to the smaller growers in the US, there are several
large hydroponic facilities that cover as many as 60 or more
acres and produce large quantities of hydroponic tomatoes,
peppers, cucumbers and lettuce. Often this produce is shipped
throughout the US to help fill the growing demand for hydroponic
produce. Currently there are jumbo jets, trains and trucks that
bring hydroponic produce daily into the United States from
Europe, Australia, New Zealand, Mexico and Canada. Both US and
Internationally grown hydroponic produce that suffers the rough
handling of long-distance transportation is usually of a lesser
quality and sells for a lower price that that of a smaller
hydroponic farmer who caters to specialty stores and farmers
markets near to their operation.
Quality of Hydroponic Produce
The premium quality of most
hydroponic produce is due to:
- the controlled environment
- high grade nutrients and
precise control of the nutrient feed ratios
- vine ripening
- the lack of herbicides and
pesticides
Advantages of Hydroponic
Produce
- Additional advantages of
hydroponic, controlled environment growing include:
- no soil borne disease
- hydroponics uses up to
1/10 of the water that is used to grow equivalent
amounts of field produce
- hydroponics uses less
fertilizer than is often used to grow equivalent amounts
of field produce
- extended growing season
- intensive production in
a small space
To learn more about commercial hydroponics,
check out the the video,
Hydroponic
Farming. Commercial hydroponic farms exist world wide, producing both
exotic, high-end vegetables and staple crops. In the US the most common
hydroponic crop is tomatoes, followed by cucumbers, lettuce and herbs.
Hydroponic farms range in size from small greenhouse operations to huge
indoor facilities that cover as many as 60 acres. The package,
How
to Start and Succeed in the Hydroponics Business, provides extensive
information on the commercial hydroponics industry and what it takes to
get started with your own hydroponics business.
In the classroom, a hydroponic garden
allows hands-on learning in the areas of plant science, plant nutrition,
plant physiology, plant care, nutrient and pH testing, and agriculture. A
unit in hydroponics also enforces practical uses of chemistry,
mathematics, physics, and engineering. The monitoring of a hydroponic
garden by students helps instill a sense of responsibility while enforcing
skills in testing, analysis, experimentation, data recording, and critical
thinking. The Hydroponics
Educator's Package includes a complete curriculum and multimedia tools
to guide educators in teaching a unit in hydroponics.
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