A community waste worker in a new project in Pakistan run by Tearfund’s partner Pak Mission Society (PMS).

From: Waste – Footsteps 107

Practical advice and inspiring stories about dealing with waste in our communities

Farmers and gardeners use compost to improve their soils and increase plant growth. Compost is made from plant and food waste, which is broken down by worms and other organisms. It needs enough oxygen (from the air) and the right amount of moisture. Below is one method for making compost.

1 Make a heap

A compost heap does not have to be contained in anything, but it is easier to manage if it is. You could use a pit, a slatted box or chicken wire. Aim for a minimum of 1 metre in each direction. It is useful to have two or three heaps so that material can be added to one while the other is breaking down. In dry areas, make compost in a pit. In wetter areas, make your heap above the ground. In cooler climates, make the compost in a sunny position. In hot, dry climates, place it out of direct sunlight. Make heaps on well-drained soil or grass, avoiding concrete. 

2 Layer it up 

Use a good mix of so-called ‘brown’ and ‘green’ materials (see below). If you live in a wet area, make a base layer of stones and twigs to allow drainage. Start with a layer of brown followed by a layer of green materials. If available, you can add a thin layer of manure and a thin layer of top soil. Then repeat these layers. Add water if the materials are dry. Do not use: non-organic waste, meat, bones, oils, dairy products or faeces from meat-eating animals (eg dogs and cats) or humans as these contain harmful bacteria. Avoid adding recurring weeds or diseased plants. 

3 Let it heat 

Cover the compost with a tarpaulin, mud or wide leaves (eg banana). This helps to keep moisture in when it is hot and prevents the compost becoming waterlogged when it rains. Do not let it dry out – add water if necessary. The heap should become warm in the middle. 

4 Turn regularly 

Keep the compost full of oxygen by turning it every few weeks. There is no need to keep layers separate. 

5 Dig it in 

When the mixture turns dark brown/black and crumbly with an earthy smell, the process is complete. This may take two months to a year. Dig it into your soil and enjoy the results! You could try selling your compost to farmers or agricultural stores (sieve it so it is fine enough).

Five ways to great compost. Illustration from Petra Röhr-Rouendaal, Where there is no artist (second edition)

Illustration from Petra Röhr-Rouendaal, Where there is no artist (second edition)

Solving problems 

If the compost is smelly and wet, there is too much nitrogen and/or water. 

If the process is very slow, there is not enough nitrogen, oxygen or water. 

If your compost is attracting insects and rodents… 


Further reading

Agrodok 8: Preparation and use of compost

by Madeleine Inckel, Peter de Smet, Tim Tersmette and Tom Veldkamp 

Agromisa Foundation has produced a detailed guide to composting. It sets out a number of different composting methods. Visit www.agromisa.org/product/preparation-use-compost to buy an electronic or printed copy for 5 or 10 USD in English, French or Portuguese. 

Written by

Written by Jude Collins

Jude Collins is a Project Information Officer at Tearfund. Email: jude.collins@tearfund.org

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