Selection of earthworm species and bed setup
- Recommended species: Epigeic earthworms like Eisenia fetida (Red Wiggler) and Eudrilus eugeniae (African Nightcrawler) are ideal due to high feeding rates and broad temperature tolerance.
- Bed dimensions: Raised beds constructed in shaded sheds (typically 1 meter width, 0.6 meter height, and convenient length) using bricks or modular HDPE vermi-beds.
- Bed layering: Base drainage layer of broken bricks and coarse sand (5 cm), followed by dried crop straw (15 cm), topped with partially decomposed cow dung and shredded farm waste.
Moisture, aeration and temperature management
Maintain bed moisture consistently between 60% and 70% by sprinkling water every 2 to 3 days. Earthworms breathe through their skin; excessive waterlogging causes anaerobic conditions and worm mortality, while dry beds halt decomposition. Ideal bed temperatures range between 20°C and 30°C.
Harvesting and organic application
- Harvest timing: Compost turns dark brown, granular, and tea-powder like in 45 to 60 days.
- Harvesting technique: Stop watering 3 to 4 days prior to harvest so worms move to lower moist layers, allowing easy scooping of the top granular compost.
- Vermi-wash collection: Collect the nutrient-rich leachate from bed drains, dilute with clean water, and spray as a foliar biostimulant.
Official source
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National Centre for Organic and Natural Farming (NCONF) ↗Related on KisanPe
Common questions
Which earthworm species is best for vermicomposting in India?
Eisenia fetida is the most widely adopted species because of its high reproduction rate, efficient organic digestion, and resilience to climate fluctuations.
Can fresh cow dung be fed directly into vermi-beds?
No. Fresh cow dung releases excessive heat and toxic gases during initial decomposition; always allow dung to pre-decompose for 10 to 15 days before feeding.
How much vermicompost should be applied per acre?
General recommendations range from 1 to 2 tonnes per acre for field crops, and 3 to 5 kg per tree for horticultural fruit orchards, as per soil health guidelines.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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