Value Added Bio-fertilizer

Vermicompost and bio-pesticide unit

Vermi means earthworm. Vermicompost is an organic fertilizer produced by earthworm species and microorganisms, which grow on animal and farm waste. It involves a simple process of decomposition used to enhance the process of waste conversion into manure. Vermicomposting is an environment-friendly and cost-effective technique for solid waste management.

Construction of Vermi-pits

Vermicomposting should be done in a pit dug in the soil. For greater efficiency, cement brick tanks are used. The tank is constructed on raised land, that is, above ground to avoid waterlogging. The floor is higher in the center and slopes on sides. The specifications for construction of pit are:

Length = 3  -Height = 1 m – Width = 1.6 m – Volume = 4.8 m³

Adequate numbers of holes (8 x 5 cm diameter) are dug at the bottom for draining of water. The bed is 5 to 10 cm thick constructed of broken bricks or sawdust.

Beds/rows of vermicompost

 To avoid permanent construction of cemented pits, plastic sheets may be placed on the ground, which prevents both earthworm and vermi-wash from going into the ground. Beds/rows are made of partially decomposed cow dung (1 m wide and 75 cm high) with a distance of 75 cm between the two rows, so that people can walk in between the rows and collect the vermicompost.

Beds/rows of vermicompost

To avoid permanent construction of cemented pits, plastic sheets may be placed on the ground, which prevents both earthworm and vermi-wash from going into the ground. Beds/rows are made of partially decomposed cow dung (1 m wide and 75 cm high) with a distance of 75 cm between the two rows, so that people can walk in between the rows and collect the vermicompost.

Shed for Vermi-compost Walls

 The shed walls should be made up of galvanized steel pipes (8 ft. in height placed at equidistance of 8 ft.) covered with green colored agro net to protect earthworms from sunlight. The width of the shed should be 20 ft. and length could be variable according to the production capacity of Gaushala.

Roof

The roof of the shed should be rounded or barreled and covered with green colored agro net. An additional plastic sheet is required during rainy season to prevent seepage of water. A thatched roof with slope of 20° supported by wooden pillars of 8 feet height would be cheap and may be provided for cover over vermi-pit from above if budget is the constraint.

 

Self-reliant local energy generation from cow dung (biogas for cooking, lighting and electricity generation)