Nitrogen and carbon losses from dung storage in urban gardens of Niamey, Niger

Urban Farm DB summary

An experiment quantified nitrogen and carbon losses from animal manure stored in urban vegetable gardens in Niamey, Niger. During a 3.5-month dry season experiment, cumulative gaseous nitrogen losses were highest (0.11 g kg−1 manure DM) in the uncovered control, decreasing by 72% with plastic sheet roofing and 50% with roofing plus rock phosphate. In a second 3.5-month rainy season experiment, carbon losses from the control were 164 g kg−1 manure DM, reduced to 77% and 65% of the control by roofing and roofing plus rock phosphate, respectively. Leaching losses during the rainy season were only observed for the unroofed control.