Author Correction: Effects of biochar, waste water irrigation and fertilization on soil properties in West African urban agriculture.

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Effects of biochar, waste water irrigation and fertilization on soil properties in West African urban agriculture.

In large areas of sub-Saharan Africa crop production must cope with low soil fertility. To increase soil fertility, the application of biochar (charred biomass) has been suggested. In urban areas, untreated waste water is widely used for irrigation because it is a nutrient-rich year-round water source.