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5.4. Harvesting vermicompost by promoting the migration of earthworms

The method of vermicomposting is based on the ability of worms to detect food sources. Worms

have the habit of leaving the depleted food pile and moving towards fresher and more flavourful
sources. Although there are many modifications to this technique, the basic principle remains

the same, with the aim of providing fresh or more palatable food that will enable the worms to
migrate from the depleted pile to the new food source.

5.5. Storage and packaging of vermicompost

Harvested vermicompost should be stored in a dark and cool place because sunlight will lead

to loss of moisture and nutrient content. Also, the harvested vermicompost material should be
stored in the open rather than packed in pouches. Packaging should be done at the time of sale

and a laminated pouch is always recommended. During outdoor storage of compost, it should
be periodically sprinkled with water to maintain the moisture level and beneficial microbial

population. If the humidity of vermicompost is maintained at 40%, it can be stored for as long
as one year without compromising its quality [20].

5.6. Utilization

The vermicompost obtained at the end of the vermicompost production process must have some

physical, chemical, and biological properties in order to be used as an input in sustainable
agricultural activities.

5.6.1. Physical properties

➢ A good vermicompost is always non-toxic, well decomposed, ecologically compatible

and environmentally friendly.

➢ All types of green waste i.e. municipal waste, agricultural waste, sewage sludge,
industrial waste and human excreta can be used for conversion by earthworms.

➢ When the turning of the soil takes place properly, it is symptomatic of aerobic
decomposition, which will produce normal odour after preparation. In case of improper

ventilation, bad odour may occur.
➢ The final result of vermicomposting will consist of fine particulate structure and

granular form.

➢ Vermicompost plays the role of "soil conditioner" by improving soil porosity, drainage
and water holding capacity.

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