Executive Summary & Operational Context
Azolla (a symbiotic aquatic floating fern hosting nitrogen-fixing Anabaena azollae) is a miraculous "green gold" feed supplement containing 25% to 30% crude protein, essential amino acids, and minerals, capable of replacing 20% of expensive commercial dairy feed.
A small 2m x 2m Silpauline pit yields 1.5 to 2.0 kg of fresh, clean Azolla every single day for just ₹0.75 per kilogram production cost.
Why Azolla is a Game-Changer for Smallholder Dairy Farmers
Commercial dairy concentrate pellets cost ₹22 to ₹26 per kilogram. Azolla matches the crude protein profile of soybean meal (25-30%) and contains vitamins (Vitamin A, B12, Beta-carotene), bio-active minerals (calcium, phosphorus, potassium, iron, zinc), and essential amino acids. Feeding 1.5 to 2 kg of fresh Azolla daily saves 1 kg of commercial concentrate per cow, reducing daily feed expenditure by ₹20 while promoting healthy skin coat and reproductive cycling.
Key Agronomic & Technical Guidelines:
- ✓Doubles biomass every 3 to 5 days under partial shade and 25-30°C temperature
- ✓Very low water footprint: water is recycled; only top-up water is needed
- ✓Enriches cattle gut flora and boosts immune resistance against mastitis
Step-by-Step Azolla Pit Construction & Inoculation
1. Select Location: Choose a partially shaded location under trees or 50% agro-shade net. Full midday sun causes scorching and algae bloom. 2. Dig Pit: Dig a shallow pit measuring 2 meters long, 2 meters wide, and 0.2 meters (8 inches) deep. Clear roots and sharp stones. 3. Lay Silpauline Sheet: Spread a 120-150 GSM UV-stabilized Silpauline tarpaulin sheet across the pit, anchoring edges with bricks. 4. Soil & Slurry Bed: Spread 10-15 kg of fertile sieved garden soil evenly. Dissolve 2 kg fresh cow dung and 30g Single Super Phosphate (SSP) in 10 liters of water and pour into the pit. 5. Water Level: Fill with clean water to a depth of 10-12 cm (4-5 inches). 6. Inoculate: Introduce 1 kg of pure, disease-free mother culture of Azolla pinnata.
| Maintenance Task | Frequency | Action Required |
|---|---|---|
| Fresh Cow Dung Slurry | Every 7 days | Add 1 kg cow dung + 20g SSP dissolved in water |
| Soil Replacement | Every 60 days | Replace 50% of bottom soil to prevent nutrient exhaustion |
| Full Water Clean-out | Every 6 months | Drain pit completely, clean plastic, and re-inoculate |
| Daily Harvest | Daily morning | Scoop 1.5–2 kg using plastic sieve; wash in fresh water |
How to Implement on Your Dairy Farm
Wash Fresh Azolla Thoroughly
Always rinse harvested Azolla in clean bucket water twice to wash off dung smell before offering to cows.
Mix with Concentrate Feed
Initially mix 500g Azolla with feed concentrate or wheat bran. Once cattle adapt to the taste over 3-4 days, increase to 1.5-2.0 kg daily.
Maintain Water Depth at 10 cm
Check water level every morning and top up to maintain 10 cm depth.
Recommended Breeds for this System
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FAQ
Frequently Asked Questions: Azolla Cultivation for Dairy Cattle: Low-Cost Protein Supplement & Pit Construction
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