By Henk de Zeeuw, Marielle Dubbeling, René van Veenhuizen and Joanna Wilbers, 2007, RUAF Foundation.

By Marielle Dubbeling and Henk de Zeeuw (ETC Urban Agriculture). With contributions from T. Otchere Larbi (IWMI Ghana), G. Merzthal and A. Santandreu (IPES), 2007, RUAF Foundation.

Olufunke Cofie, Adeoluwa Olugbenga and Philip Amoah

In: UA Magazine no 23 - Urban nutrient management, pp. 49-50

If human urine is properly collected and used for agriculture, it contributes to improved environmental sanitation in cities and reduces the costs of crop production. The innovation lies in the integration of agriculture, environment and sanitation sectors.

Bolanle Wahab, M.K.C. Sridhar and A.A. Ayorinde

In: UA Magazine no 23 - Urban nutrient management, pp. 25-26

Solid waste disposal is a nagging problem faced by various communities in Ibadan in southwest Nigeria and other state capitals. Ibadan, the capital of Oyo State, is the most densely populated city in the state with over three million inhabitants. It is said that in Ibadan every street is a market. Many backyards are used for growing local vegetables and medicinal herbs.