Using Urban Organic Waste as a Source of Nutrients, the need of awareness raising

Hubert de Bon, André Fleury, To Thi Thu Ha

In: UA Magazine no 23 - Urban nutrient management, p.34

The use of liquid and solid urban waste for animal and crop production in the city is a centuries-old practice. Throughout the world, urban farmers supply nutrients to their crops by applying organic matter and/or chemical fertilisers. In Yaoundé, Cameroon, 63 per cent of urban and periurban farmers purchase recycled livestock wastes and 75 per cent use recovered and recycled fresh and decomposed kitchen waste (Parrot et al., 2009). In Dakar, Senegal, 98 per cent of urban and periurban farmers use organic matter, either from livestock (35 per cent), plant and soil-based compost (46 per cent) or city wastes (19 per cent) (Ba, 2007). In Antananarivo, Madagascar, 100 per cent use livestock manure: 88 per cent use manure from the animals on their own farms, and 12 per cent buy it. Most of these urban farmers also use chemical fertilisers.

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