Articles | Volume 2, issue 2
Original research article
21 Apr 2016
Original research article |  | 21 Apr 2016

Organic wastes from bioenergy and ecological sanitation as a soil fertility improver: a field experiment in a tropical Andosol

Ariane Krause, Thomas Nehls, Eckhard George, and Martin Kaupenjohann

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Cited articles

Abdullahi, Y. A., Akunna, J. C., White, N. A., Hallett, P. D., and Wheatley, R.: Investigating the effects of anaerobic and aerobic post-treatment on quality and stability of organic fraction of municipal solid waste as soil amendment, Bioresource Technol., 99, 8631–8636,, 2008.
Abel, S., Peters, A., Trinks, S., Schonsky, H., Facklam, M., and Wessolek, G.: Impact of biochar and hydrochar addition on water retention and water repellency of sandy soil, Geoderma, 202, 183–191,, 2013.
Abera, G. and Wolde-Meskel, E.: Soil Properties, and Soil Organic Carbon Stocks of Tropical Andosol under Different Land Uses, Open J. Soil Sci., 3, 153–162,, 2013.
Asai, H., Samson, B. K., Stephan, H. M., Songyikhangsuthor, K., Homma, K., Kiyono, Y., Inoue, Y., Shiraiwa, T., and Horie, T.: Biochar amendment techniques for upland rice production in Northern Laos: 1. Soil physical properties, leaf SPAD and grain yield, Field Crop. Res., 111, 81–84,, 2009.
Baba, Y., Tada, C., Watanabe, R., Fukuda, Y., Chida, N., and Nakai, Y.: Anaerobic digestion of crude glycerol from biodiesel manufacturing using a large-scale pilot plant: Methane production and application of digested sludge as fertiliser, Bioresource Technol., 140, 342–348,, 2013.
Short summary
In a field experiment in Tanzania, we used substrates from local projects as soil amenders for intercropping relevant local crops, aiming to advance the practical application of known principles for smallholder agriculture in SSA, i.e. biochar and biogas application and EcoSan practices. We studied the short-term effects on crop productivity, plant nutrition and soil properties. By mitigating P scarcity and acidification, yields were increased by up to 400 % compared to the control.