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Avilibility of Green Fodder    
 
 
Step wise Azolla production with literature <<Back To Category
 




 

Azolla- As Livestock FeedAbout Azolla

    • Azolla is a floating fern which resembles algae 
    • Normally azolla is grown in paddy fields or shallow water bodies 
    • Multiplies very rapidly
 
Azolla as fodder/ feed
    • Rich in proteins, essential amino acids, vitamins (vitamin A, vitamin
      B12 and Beta- Carotene), growth promoter intermediaries and minerals
      like calcium, phosphorous, potassium, ferrous, copper, magnesium 
    • Dry weight basis, it contains 25 - 35 percent protein, 10 - 15 percent
      minerals and 7 - 10 percent of amino acids, bio-active substances and
bio-polymers 
     • Livestock easily digest it, owing to its high protein and low lignin
content 
     • Azolla can be mixed with concentrates or can be given directly to
livestock 
    • Can also be fed to poultry, sheep, goats, pigs and rabbits. 
    Azolla Production
    • The soil in the area is first cleared of weeds and leveled 
    • Bricks are lined horizontally in a rectangular fashion. 
    • A UV stabilized silpauline sheet of 2mX2m size is uniformly spread over
     the bricks in such a way as to cover the margin of the rectangle made by
      the bricks 
    • 10-15 kg of sieved soil is uniformly spread over the silpauline pit 
    • Slurry made of 2 kg cow dung and 30 g of Super Phosphate mixed in 10
       liters of water, is poured onto the sheet. More water is poured on to raise
       the water level to about 10 cm • About 0.5-1kg of pure mother azolla culture seed material is spread
      uniformly over the water, after mild stirring of soil and water in the azolla
bed. Fresh water should be sprinkled over the azolla immediately after
inoculation to make the azolla plants upright 
• In a week’s time, the azolla spreads all over the bed and develops a thick
mat like appearance. 
• A mixture of 20 g of Super Phosphate and about 1 kg of cow dung should
be added once in 5 days in order to maintain rapid multiplication of the
azolla and to maintain the daily yield of 500 g 
• A micronutrient mix containing magnesium, iron, copper, sulphur etc., can
also be added at weekly intervals to enhance the mineral content of azolla 
• About 5 kg of bed soil should be replaced with fresh soil, once in 30 days,
to avoid nitrogen build up and prevent micro-nutrient deficiency 
• 25 to 30 percent of the water also needs to be replaced with fresh water,
once every 10 days, to prevent nitrogen build up in the bed 
• The bed should be cleaned, the water and soil replaced and new azolla
inoculated once every six months 
• A fresh bed has to be prepared and inoculated with pure culture of azolla,
when contaminated by pest and diseases 
 
Harvesting
• Will grow rapidly and fill the pit within 10 - 15 days. From then on, 500
- 600 g of azolla can be harvested daily. 
• Can be done every day from the15th day onwards with the help of aplastic sieve or tray with holes at the bottom 
• The harvested azolla should be washed in fresh water to get rid of the
cow dung smell 
Alternative Inputs
• Fresh biogas slurry may also be used 
• Waste water from bathroom and cattle shed can also be used to fill the
pit. In areas where there is a problem of fresh water availability, the
water left after washing clothes (after the second rinsing) can also be
used. 
Environmental factors for the growth
• Temperature 20°C - 28°C 
• Light 50% full sunlight 
• Relative Humidity 65 - 80% 
• Water (standing in the tank) 5 - 12 cm 
• pH 4-7.5
Points to be noted during cultivation of azolla
• Washing in a net will be useful as it will allow small plantlets to get
out, and they can be poured back in to the pond 
• Care should be taken to retain the temperature below 25°C. 
• Shade nets can be used to cut the light intensity. 
• The azolla biomass should be removed daily to avoid over crowding.