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11.2. Pit method
Composting is done in the cemented pits, wooden boxes, plastic buckets, silpaulin bag, baskets,
etc. The unit is covered with thatch grass or any other locally available materials.
Procedure:
➢ Pit size of dimensions 10´x 4´ x 2´ of either cement or vermibag is maintained. The
length and width can be increased or decreased depending upon the availability of
material but not the depth because the earthworms’ activity is confined to 2 feet depth
only.
st
1 layer: bedding material of 1” thick with soft leaves
nd
2 layer: 9” thick organic residue layer finely chaffed material
rd
3 layer: dried cattle dung + water equal mixture of 2” layer.
The layer is continued until the pile is filled up.
➢ On 25 days old unit, 795-820 worms are introduced into the pit (15-20 worms per kg
of bed material) without disturbing the pit.
➢ Proper moisture and temperature is maintained by frequent watering, turnings and
subsequent staking.
➢ The turnover of the compost is 75% (If the total material accommodated in the pit is
1000 kg; the out turn will be 750 kg).
➢ The filled materials are watered and turned at regular interval [9].
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