- Duckweed species are small
floating aquatic plants found worldwide and often seen growing in thick,
blanket-like mats on still, nutrient-rich fresh and brackish
waters.
- Common Duckweed is a food
source for many birds and fish, especially ducks, as its name would
suggest. Duckweed also provides shelter and protection for aquatic
(water) animals, such as frogs, snakes, fish, insects, crustaceans, and
others.
- To cultivate duckweed a
farmer needs to organize and maintain conditions that mimic the natural
environmental niche of duckweed: a sheltered, pond-like culture plot and
a constant supply of water and nutrients from organic or mineral
fertilizers.
- Duckweed protein has higher
concentrations of the essential amino acids, lysine and methionine, than
most plant proteins and more closely resembles animal protein in that
respect.
- Harvested duckweed plants
contain up to 45% protein by dry weight and may be used without further
processing (i.e., drying) as a complete feed for fish. Dried duckweed
meal can provide the protein constituent of various mixed animal feeds.
The vitamin A and pigment content of duckweed have proven particularly
valuable in poultry diets.
- Duckweed-based systems
provide genuine solutions to wastewater treatment . They are inexpensive
to install as well as to operate and maintain. They do not require
imported components.
- Duckweed-based wastewater
treatment systems have demonstrated great efficiency in treating
domestic wastewater and also have done so at a net profit.
- The profitability of
duckweed production is especially sensitive to two factors: (1) the cost
of fertilizer, and (2) the sale price of fresh duckweed. Where all
fertilizer and most water are obtained from a domestic wastewater
stream, the internal rate of return on duckweed production jumps from 23
percent to 52 percent. A 30 percent increase in the price of fresh
duckweed brings the internal rate of return up to 55
percent.
- The amount of working
capital required for linked duckweed and fish production is high by most
comparable standards. At a price of $0.03/kg for fresh duckweed, a
farmer growing one hectare of carp will require between $1,500 and
$1,600 for a year's supply of duckweed.
- As a market for dried
duckweed meal is gradually established, pricing of fresh duckweed will
be influenced more by market prices of dried duckweed meal and protein
extract. And these will, in turn, be tied closely to prices of
competitive products derived from soybean and
fish.
|
General
- Duckweed
- Lemnaceae
- Natural Populations Of
Duckweed
- Duckweed at The Phoenix
Zoo
- Technical Description Of the
Duckweed Family
- Duckweed And Fishes
- Duckweed Aquaculture
|
Growth And Cultivation
- Aquatic Habitats
- Sustainable
Aquaculture
- Flowering And
Dormancy
- Optimum Growing
Conditions
- Modeling Duckweed growth in
Wastewater Treatment systems
- Measuring Duckweed
Growth
- Obtaining and Culturing
Duckweed
|
Species
- Common Duckweed
- Giant Duckweed
- Landoltia punctata
- Lemna minor
- Lemna trisulca
- Free Floating Plants
- Worldwide Lemnaceae Species
List
Consultants
- Duckweed.Com.AU
- Creek Street Micro
Farm
- Louis Landesman
- Mr. Wolffia
- Sulabh International Academy
of Environmental Sanitation
- Profiles Of
Specialists
- Rebecca Maria Torres
Experiments
- Amino Acid Metabolism of
Lemna minor
- Variation And Selection
Within Clonal Lines Of Lemna minor
- Analyzing Duckweed
Data
- Duckweed Bioassay
Method
- Population Growth of an
Invasive Species Using Duckweed as a Model
- Comparison Of the
Sensitivity algae Vs Duckweed
- Dose/Response Experiments
Using Duckweed
- Production Of Auxotrophs In
a Duckweed
- Duckweed Bioassays:
Compounds and Concentrations
|
Technology
- Potential for the use of
duckweed-based pond systems in Zimbabwe
- Constructed Wetlands for
Swine Wastewater
- Wastewater Treatment Using
Duckweed
- Duckweed based wastewater
treatment and reuse
- Dynamics of Nitrogen Cycling
in Lemna Wastewater Treatment Systems
- Duckweed Technology
- Fatehgarh tops in
introducing duckweed technology
- United States Patent
Applications
- The Capacity Of Duckweed to
Treat Wastewater
- Bioremediation
- A Potential High Protein
Feed Resource For Domestic animals And Fish
- Duckweed Use For Sewage
treatment And Fodder Production
- A new System For The
Production Of Vaccines And Monoclonal Antibodies
- Duckweed Application
- Duckweed Soup
- Dr Wastewater Duckweed
Application Page
- Digestibility And Feeding
Systems Of Duckweed In Ducks
- Nutritional evaluation of
aquatic plants for pigs
|
Projects
- International Scientific
Cooperation Projects
- Integrated Aquaculture
Project
- Living With Duckweed
- Social Aspects Of Sanitation
in India
- Duckweed Project In
Sanghol
- Duckweed Wastewater
Treatment and Reuse For Fodder
- Duckweed Aquaculture
Project
- Duckweed to Pet Food
- Project Evaluation
- Experiments And Projects In
Duckweed
- Duckweed Research
Project
- Regional Projects
Management And Control
- Aquatic Weed Identification
And Control
- Duckweed And Watermeal:
Prevention And control
- Control Of the Protein
Turnover Rates In Lemna minor
- Aquatic Plant
Management
- Duckweed And
Watermeal
- Duckweed And Watermeal
Control In Missouri Lakes And Ponds
- Aquatic Plant ID And
Control
- Biology and Control of
Duckweed With Herbicides
|
Markets
- Integrated Aquaculture in
Eastern India
- Lemnagene extols Duckweed
Virtues For Biomanufacturing
- Nutrient Recovery
Options
- Duckweed Ponds For
Sustainable Sanitation In Developing Countries
- The Role Of Scavenging
Duckweed In Integrated Farming Systems in Vietnam
- Wastewater
Aquaculture
Company
Profiles
- Bio Tech Waste
Management
- Biolex
- Lemna Tec
- Missouri Botanical
Garden
- Airmax
- PhytoMyco Research
Corporation
Reports
- Lemna Corporation Facility
Wins Engineering Excellence Award
- Lemna Facility In Poland
Receives National Outstanding Construction Award
- Lemna International
Providing Immediate And Long term Solutions
- Duckweed Invasion In Lake
Maracaibo
- Supplement For Scavenging
Native Chickens
- Annual Report 2004
- Annual Report 2005
|