Library
Bio Inputs; Compost Pits / Vermi-Compost Unit – Compost Enrichment & Storage Area

1. What is this item?

This is the organic recycling and soil enrichment zone of a farm. It includes:

• Compost pits or tanks (for aerobic composting)

• Vermicompost beds (with earthworms for faster & nutrient-rich breakdown)

• Covered storage zones for mature compost

• Optional blending station for enrichment with bio-enzymes, cow dung slurry, rock phosphate, etc.

It's the backbone of organic soil health regeneration and plays a big role in farm sustainability goals.

2. How is the Quantity Estimated?

• Waste Generation: Usually 1–1.5 tons of organic waste per acre/year

• Pit/Beds Needed: For a 10-acre farm, around 15–20 cubic meters (m³) of composting volume is ideal

• Can be made using:

o 2–3 large aerobic pits (4m × 1.5m × 1.5m)

o 3–5 vermi-beds (3m × 1m × 0.5m) under shed

• Storage Zone: Covered space for 2–3 tons of finished compost = ~150–200 sq ft area

3. What are the Cost Components?

• Earthwork: Pit excavation or raised bed formation (₹3,000–₹5,000 per unit)

• Masonry/Brick lining or Ferrocement tank (₹500–700 per cu.m or ~₹10,000–15,000 per pit)

• Vermi-bed setup: HDPE sheets, shade net roofing, drainage layer (₹4,000–6,000 per bed)

• Roofing shed for beds/storage: Tin sheet + GI pipe frame (₹70–90/sq ft)

• Bio-inoculants, worms & slurry units (₹5,000–10,000)

• Storage bins or compartments (₹8,000–15,000)

• Labour & operational tools (₹10,000–20,000)

4. What are the Going Rates & Per Unit Cost?

Component Estimated Rate Units / Size

Compost pits (2–3 nos) ₹10,000–15,000 each 1.5m x 4m x 1.5m

Vermi-beds (3–5 nos) ₹4,000–6,000 each 3m x 1m x 0.5m

Shed roofing (GI + Tin) ₹70–90/sq ft ~250–300 sq ft total

Compost storage bins ₹8,000–15,000 total ~200 sq ft area

Inoculants/worms/tools ₹10,000–20,000 One-time setup

Total Estimate ₹75,000 – ₹1.25 lakh (for 10–12 acre farms)

Why this rocks:

• Turns waste to wealth – saves fertilizer costs

• Builds long-term soil health

• Helps qualify for organic certification & carbon credits

• You can start small & scale up – even DIY versions possible

Would you like a version that integrates cow dung pits, jeevamrit drums, or biogas outlet combo with this unit?