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Urine as an alternative fertilizer in agriculture: Effects in amaranths (Amaranthus caudatus) production

  • O.O. AdeOluwa (a1) and O. Cofie (a2)


Crop production in most developing countries is faced with a dearth of resources for optimum production of which fertilizer is one. The use of human urine as well as its mixture with compost are potential solutions to this problem. Thus, this report investigated the influence of human urine and its combination with compost on yield and soil quality of land under green amaranths (Amaranthus caudatus). This study involved a field experiment to determine the response of green amaranths to the application of 100% urine, 2/3 urine N + 1/3 compost N, 100% compost N, NPK (15:15:15) at the rate of 100 kg N ha−1 and control with no fertilizer treatment using farmers’ participatory approach. The vegetables produced from the experimental treatments were analyzed in the laboratory for pathogenic microbial risk as well as effects of the fertilizer on nutrient status of the experimental soils (before and after planting). Perception of farmers and consumers in the study area regarding use of urine as fertilizer for vegetable production was investigated with the aid of a structured questionnaire. The result of this investigation revealed that 100% urine resulted in 58.17 t ha−1 total plant yield, while NPK 15:15:15 gave 34.34 t ha−1 total plant yield in the two plantings. Microbial analysis of edible portion of vegetable from plot fertilized with urine did not reveal any significantly different pathological contamination compared to other fertilizer treatments used in this investigation. Urine treatment improved soil nutrient exchangeable cations and acidity. The perception study revealed that respondents perceived urine to be a good agricultural input that could be used as a fertilizer in vegetable crop production and there was no strong cultural norm that would prevent them using it for crop production. Vegetable consumers would also buy vegetable crops grown with urine if they are well informed about its safety for crop production. Since the use of urine as fertilizer for crop production improved amaranth's yield and did not show any negative implication on soil environment, human urine seems to have good potential both in crop yield and acceptability by farmers and consumers.


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1Guzha, E., Nhapi, I., and Rockström, J. 2005. An assessment of the effect of human faeces and urine on maize production and water productivity. Physics and Chemistry of the Earth 30:840845.
2AdeOluwa, O.O., Adeoye, G.O., and Yusuff, S.A. 2009. Effects of organic nitrogen fortifiers on some growth parameters of green amaranths (Amaranthus caudatus L.). Renewable Agriculture and Food Systems 24(4):245250.
3Kirchmann, H. and Peterson, S. 1995. Human urine – chemical composition and fertilizer use efficiency. Fertilizer Research 40:149154.
4Hoglund, C. 2001. Evaluation of microbial health risks associated with the reuse of source separated human urine. Doctoral thesis, Royal Institute of Technology (K.T.H.), Stockholm. 78. pp. Available at Web site (accessed July 27, 2011).
5Nansubuga, P. 2008. Uganda: Human urine safe as fertilizer. The Monitor, February 27, 2008. Available at Web site (accessed January 2009).
6American Chemical Society (ACS) 2007. Human urine as a safe, inexpensive fertilizer for food crops. Science Daily, October 8. Available at Web site (accessed July 27, 2011).
7Schönning, C. 2001. Urine diversion – hygienic risks and microbial guidelines for reuse 1. Department of Parasitology, Mycology and Environmental Microbiology, Swedish Institute for Infectious Disease Control (SMI), SE-171 82 Solna, Sweden.
8Feachem, R.G., Bradley, D.J., Garelick, H., and Mara, D.D. 1983. Sanitation and Disease – Health Aspects of Excreta and Wastewater Management. John Wiley and Sons, Chichester, UK.
9Matsui, S. 1997. Night soil collection and treatment, Japanese practice and suggestion for sanitation of other areas of the globe. Paper presented at the Sida Sanitation Workshop, August 6–9 at Balingsholm, Stockholm. Sida Report No. 9.
10Richert, A., Gensch, R., Lönsson, H., Stenström, T.-A. and Dagerskog, L. 2010. Practical Guidance on the Use of Urine in Crop Production. EcoSanRes Programme, Stockholm Environment Institute, Stockholm, Sweden. p. 54.
11Bouyoucos, C.J. 1962. Hydrometer method: Improved for making particle size analysis of soils. Agronomy Journal 54:465467.
12Jackson, M.L. 1958. Soil Chemical Analysis. Prentice-Hall, New York.
13Walkley, A. and Black, A. 1934. An examination of the Degtjareff method for determining soil organic matter and a proposed modification of the chromic acid titration method. Soil Science 37:2938.
14Bray, R.H. and Kurtz, L.T. 1945. Determination of total organic and available forms of phosphorus. Soil Science 59:4549.
15Norman, J.C. 1992. Tropical Vegatable Crops. Arthur H. Stockwell, Ilfracombe, UK.
16Sridhar, M.K.C., Adeoye, G.O., and AdeOluwa, O.O. 2001. Optimizing nitrogen management in food and energy production and enviromental protection; Proceedings of the 2nd International Nitrogen Conference on Science and policy. The Scientific World 1(S2):142147.
17Simons, J. and Clemens, J. 2004. The use of separated human urine as mineral fertilizer. In Werner, C., Avendano, V., Demsat, S., Eicher, I., Hernandez, L., Jung, C., Kraus, S., Lacayo, I., Neupane, K., Rabiega, A. and Wafler, M. (eds). Ecosan-Closing the Loop, Proceedings of the 2nd International Symposium on Ecological Sanitation, 7–11 April 2003, Lübeck, Germany, p. 595600.
18Båth, B. 2003. Field trials using human urine as fertilizer to leeks (in Swedish). Manuscript, Department of Ecology and Plant Production Science, Swedish University of Agricultural Sciences, Uppsala, Sweden.
19AdeOluwa, O.O. and Sobamowo, J.O. 2008. Growth and yield response of Celosia argentea L. to evaluation of human urine, compost and their fortifications as organic fertilizer sources. In Proceedings of 1st West African Summit on Organic Agriculture, 17–21 November 2008, at University of Agriculture, Abeokuta, Nigeria. p. 228232.
20Zhangliu, D., Shufu, L., Xiaoping, X., Guangli, Y., and Tusheng, R. (1999). Soil physical quality as influenced by long-term fertilizer management under an intensive cropping system. International Journal of Agricultural and Biological Engineering 2(1):19.
21World Heath Organization (2006). WHO Guidelines for the Safe Use of Wastewater, Excreta and Grey Water. WHO, Geneva. 95 pp.
22Drechsel, P., Abaidoo, R.C., Amoah, P., and Cofie, O.O. 2000. Increasing use of poultry manure in and around Kumasi, Ghana: Is farmers’ race consumers’ fate? Urban Agriculture Magazine 2:2527.
23The African Executive (2008). Urine turns pivotal in fighting poverty. Available at Web site (accessed February 2009).
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Renewable Agriculture and Food Systems
  • ISSN: 1742-1705
  • EISSN: 1742-1713
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