Abstract
Food shortages often threaten central Tanzania. Sustainable action adapted to local environmental conditions is desperately needed. In the framework of the TransSEC project, two food value chains in the Dodoma region of Tanzania were inspected in order to make propositions for improvement , spanning from soil preparation to product consumption. Therefore, soil mapping approaches were required to obtain rapid and reliable information. This would enable local farmers to participate in the development of upgrading strategies and extensionists to develop recommendations that take local soil conditions into account. In this study, a combination of participatory soil mapping and gamma ray spectrometry-assisted transect mapping was applied to establish local soil maps of two villages in the Dodoma region. Participatory mapping included key informant interviews, group discussions and transect walks. Local farmers indicated reference profiles for local soil types. Their gamma radiation signatures delivered base information for further soil exploration and soil unit delineation in the field. Finally, high resolution satellite images were used to establish the village soil maps. This approach allows capture of the major soil differences within a village territory and reduction of the costs of chemical analyses. Challenges were soil unit separation with gamma ray spectrometry due to erosional redistribution processes at the surface, correct translation of specific terms from local tongues as well as variable individual soil knowledge of local participants. Ultimately, the combination of local soil knowledge with innovative scientific mapping yielded quick results with sufficient spatial resolution for extension work.
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AbdulRahim, M. A., Shehu, D. J., Mensah, S. A., Hartemink, A. E., Ruf, F., Uprety, K., Koppen, B. v., Bahri, A., Tirado, R., Johnston, P., Riley, J. J., Abalu, G. I., Hall-Matthews, D., & Bissonnette, J.-F. (2008). Experts address the question: “what are the most important constraints to achieving food security in various parts of Africa?”. Natural Resources Forum, 32, 163–166.
Barrera-Bassols, N., & Zinck, J. A. (2003). Ethnopedology: a worldwide view on the soil knowledge of local people. Geoderma, 111, 171–195.
Barrios, E., & Trejo, M. T. (2003). Implications of local soil knowledge for integrated soil management in Latin America. Geoderma, 111, 217–231.
Beamish, D. (2013). Gamma ray attenuation in the soils of Northern Ireland, with special reference to peat. Journal of Environmental Radioactivity, 115, 13–27.
Blake, G. R., & Hartge, K. H. (1986). Bulk density. In A. Klute (Ed.), Methods of soil analysis, part 1. 2nd edition. Agronomy series (pp. 363–375). Madison: American Society of Agronomy.
Blume, H.-P., Brümmer, G. W., Horn, R., Kandeler, E., Kögel-Knabner, I., Kretzschmar, R., Schad, P., Stahr, K., & Wilke, B.-M. (2016). Scheffer/Schachtschabel Soil Science. Berlin: Springer.
Bot, A., & Benites, J. (2005). The importance of soil organic matter. FAO Soils Bulletin 80. Rome: Food and Agriculture Organization of the United Nations (FAO).
Bray, R. H., & Kurtz, L. T. (1945). Determination of total organic and available forms of phosphate in soils. Soil Science, 59, 39–45.
Caroll, T. R. (1981). Airborne soil moisture measurement using natural terrestrial gamma radiation. Soil Science, 132, 358–366.
Central Intelligence Agency, C. I. A. (2014). The world Factbook 2013–14. Washington, DC: Central Intelligence Agency https://www.cia.gov/library/publications/the-world-factbook/fields/2002.html. Accessed 28 May 2016.
Chabra, R., Pleysier J., & Cremers, A. (1975). The measurement of the cation exchange capacity and exchangeable cations in soils: a new method. Proceedings of the International Clay Conference, Mexico. 439–449.
Chambers, R. (1992). Rural appraisal: rapid, relaxed and participatory. Institute of Development Studies (University of Brighton). Sussex, UK: IDS Discussion paper No. 331.
Clemens, G., Fiedler, S., Nguyen, D. C., Nguyen, V. D., Schuler, U., & Stahr, K. (2010). Soil fertility affected by land use history, relief position, and parent material under a tropical climate in NW-Vietnam. Catena, 81(2), 87–96.
Cools, N., De Pauw, E., & Deckers, J. (2003). Towards an integration of conventional land evaluation methods and farmers’ soil suitability assessment: a case study in northwestern Syria. Agriculture, Ecosystems and Environment, 95, 327–342.
de Groot, A.V., van der Graaf, E.R., de Meijer, R.J., Maučec, M. (2009). Sensitivity of in-situ g-ray spectra to soil density and water content. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 600(2), 519-523.
Dierke, C., & Werban, U. (2013). Relationships between gamma-ray data and soil properties at an agricultural test site. Geoderma, 199, 90–98.
DIN 18129-G - ISO 10693. (2011). Soil, investigation and testing - determination of lime content (DIN 18129-G, Scheibler). Berlin: Beuth-Verlag.
DIN ISO 11277. (1994). Bodenbeschaffenheit - Bestimmung der Partikelgrößenverteilung in Mineralböden - Verfahren durch Sieben und Sedimentation nach Entfernen der löslichen Salze der organischen Substanz und der Carbonate. Berlin: Beuth-Verlag.
Eriksson, M. G., & Christiansson, C. (1997). Accelerated soil erosion in Central Tanzania during the last few hundred years. Physics and Chemistry of the Earth, 22(3–4), 315–320.
Geological Survey of Tanzania. (1953). Geological map, quarter degree sheet 163. Tanzania: Dodoma.
Geological Survey of Tanzania. (1967). Geological map, quarter degree sheet 162. Tanzania: Dodoma.
Gillman, C. (1930). Notes on soil erosion in East Africa. Gillman Papers: Hans Cory collection. University of Dar es Salaam.
Graef, F. (1999). Evaluation of agricultural potentials in semi-arid Niger – a soil and terrain (NiSOTER) study. Hohenheim: Dissertation.
Graef, F., Sieber, S., Mutabazi, K., Asch, F., Biesalski, H., Bitegeko, J., Bokelmann, W., Bruentrup, M., Dietrich, O., Elly, N., Fasse, A., Germer, J., Grote, U., Herrmann, L., Herrmann, R., Hoffmann, H., Kahimba, F., Kaufmann, B., Kersebaum, K., Kilembe, C., Kimaro, A., Kinabo, J., König, B., König, H., Lana, M., Levy, C., Lyimo-Macha, J., Makoko, B., Mazoko, G., Mbaga, S., Mbogoro, W., Milling, H., Mtambo, K., Mueller, J., Mueller, C., Mueller, K., Nkonja, E., Reif, C., Ringler, C., Ruvuga, S., Schaefer, M., Sikira, A., Silayo, V., Stahr, K., Swai, E., Tumbo, S., & Uckert, G. (2014). Framework for participatory food security research in rural food value chains. Global Food Security, 3(1), 8–15.
Grasty, R. L. (1979). Gamma ray spectrometric methods in uranium exploration theory and operational procedures. Geophysics and geochemistry in the search for metallic ores, 31, 148–161.
Herrmann, L. (2013). Scales in soil science aspects and prospects. Habilitation thesis. Stuttgart: University of Hohenheim.
Herrmann, L., Stahr, K., & Sivakumar, M. V. K. (1996). Dust deposition on soils of southwest Niger. 35–47. In B. Buerkert et al. (Eds.), Wind erosion in West Africa: the problem and its control. Proceedings of the International Symposium, Stuttgart, Germany. Weikersheim: Margraf Verlag.
Herrmann, L., Schuler, U., Rangubpit, W., Erbe, P., Surinkum, A., & Zarei, M. (2010). Soil solutions for a changing world. the potential of gamma-ray spectrometry for soil mapping. In R. J. Gilles & N. Prakongkep (Eds.), Proceedings of the 19th World Congress of Soil Science; soil solutions for a changing world . Brisbane: IUSS. ISBN 978-0-646-53783-2
Herrmann, L., Schuler, U., Erbe, P., Rangubpit, W., Surinkum, A., & Stahr, K. (2013). Gamma-ray spectrometry: a useful tool for soil mapping in inaccessible terrain and data-scarce regions. In Fröhlich, H.L., Schreinemachers, P., Stahr, K., & Clemens, G. (Eds.), Sustainable land use and rural development in Southeast Asia: innovations and policies for mountainous areas (pp. 35–48). Berlin: Springer.
Hubbell, J. H., & Berger, M. J. (1968). Attenuation coefficients, energy absorption coefficients, and related quantities. In R. G. Jaeger (Ed.), Photon atomic cross sections (pp. 167–202). Berlin: Springer.
International Atomic Energy Agency IAEA. (2003). Guidelines for radioelement mapping using gamma ray spectrometry data. Wien: IAEA.
IUSS Working Group WRB. (2015). World reference base for soil resources update 2015. World Soil Resources Reports 106. Rome: Food and Agricultural Organization of the United Nations (FAO).
Jahn, R., Blume, H.-P., Asio, V. B., Spaargaren, O., Schad, P., et al. (2006). Guidelines for soil description. Rome: Food and Agriculture Organization of the United Nations (FAO).
Landon, J. R. (1984). Booker tropical soil manual: a handbook for soil survey and agricultural land evaluation in the tropics and subtropics. New York & London: Routledge.
Letey, J. (1985). Relationship between soil physical properties and crop production. In B. A. Stewart (Ed.), Advances in soil science (Vol. 1, pp. 277–294). New York: Springer.
Lippe, M., Thai Minh, T., Neef, A., Hilger, T., Hoffmann, V., Lam, N. T., & Cadisch, G. (2011). Building on qualitative datasets and participatory processes to simulate land use change in a mountain watershed of Northwest Vietnam. Environmental Modelling & Software, 26(12), 1454–1466.
Liwenga, E. (2013). Food insecurity and coping strategies in semiarid areas. The case of Mvumi in Central Tanzania. Stockholm: Almqvist & Wiksell International.
Milne, G. (1935). Some suggested units for classification and mapping, particularly for east African soils. Soil Research, 4, 183–198.
Munsell, A. H. (2009). Revised Munsell soil color charts. Michigan: X-Rite Munsell.
Mwalyosi, R. B. B. (1992). Land-use changes and resource degradation in south–west Masailand, Tanzania. Environmental Conservation, 19, 145–152.
Nisar, A., Suhaimi Jaafar, M., & Alsaffar, M. S. (2015). Natural radioactivity in virgin and agricultural soil and its environmental implications in Sungai Petani, Kedah, Malaysia. Pollution, 1(3), 305–313.
NOAA Coastal Services Center. (2009). Introduction to conducting focus groups. USA: Charleston.
Norton, J. B., Pawluk, R. R., & Sandor, J. A. (1998). Observation and experience linking science and indigenous knowledge at Zuni, New Mexico. Journal of Arid Environments, 39, 331–340.
Osorio, M., Percic, M., & Di Battista, F. (2014). Gender inequalities in rural employment in Tanzania mainland. An overview. Rome: Food and Agriculture Organization of the United Nations (FAO).
Oudwater, N., & Martin, A. (2003). Methods and issues in exploring local knowledge of soils. Geoderma, 111(3–4), 387–401.
Petersen, H., Wunderlich, T., Attia, S., Hagrey, A., & Rabbel, W. (2012). Characterization of some middle European soil textures by gamma-spectrometry. Journal of Plant Nutrition and Soil Science, 175, 651–660.
Pracilio, G., Adams, M. L., Smettem, K. R. J., & Harper, R. (2006). Determination of spatial distribution patterns of clay and plant available potassium contents in surface soils at the farm scale using high resolution gamma ray spectrometry. Plant and Soil, 282(1), 67–82.
Schubert, M., & Schulz, H. (2002). Diurnal radon variations in the upper soil layers and at the soil-air interface related to meteorological parameters. Health Physics, 83(1), 91–96.
Schuler, U., Herrmann, L., Ingwersen, J., Erbe, P., & Stahr, K. (2010). Comparing mapping approaches at subcatchment scale in northern Thailand with emphasis on the maximum likelihood approach. Catena, 81, 137–171.
Schuler, U., Erbe, P., Zarei, M., Rangubpit, W., Surinkum, A., Stahr, K., & Herrmann, L. (2011). A gamma-ray spectrometry approach to field separation of illuviation-type WRB reference soil groups in northern Thailand. Journal of Plant Nutrition and Soil Science, 174, 536–544.
Sledgers, M. F. W. (2008). “If only it would rain”: farmers’ perceptions of rainfall and drought in semi-arid Central Tanzania. Journal of Arid Environments, 72, 2106–2123.
Taylor, M. J., Smettem, K., Pracillio, G., & Verboom, W. (2002). Relationships between soil properties and high-resolution radiometrics, central eastern Wheatbelt, Western Australia. Exploration Geophysics, 33, 95–102.
TMA. (2013). Weather data Dodoma airport, Tanzanian meteorological agency. Tanzania: Dodoma.
United Nations. (1983). Soil survey report of Dodoma Capital City district. National Soil Service. Soil Survey Report No. 4. Tanga, Tanzania.
Van der Klooster, E., van Egmond, F. M., & Sonneveld, M. P. W. (2011). Mapping soil clay contents in Dutch marine districts using gamma-ray spectrometry. European Journal of Soil Science, 62, 743–753.
Werban, U., Bartholomeus, H., Dietrich, P., Grandjean, G., & Zacharias, S. (2013). Digital soil mapping: approaches to integrate sensing techniques to the prediction of key soil properties. Vadose Zone Journal, 12(4), 1–4.
Wilford, J., & Minty, B. (2006). The use of airborne gamma-ray imagery for mapping soils and understanding landscape processes. In P. Lagacherie, A. B. McBratney, & M. Voltz (Eds.), Developments in Soil Science (Vol. 31, pp. 207–218). Philadelphia: Elesvier.
Wilford, J., Murphy, B., & Summerell, G. K. (2007). Delineating regolith materials using multi-scaled terrain attributes and gamma-ray imagery - applications for updating soil-landscape maps and managing dryland salinity. In L. Oxley & D. Kulasiri (Eds.), MODSIM 2007 international congress on modelling and simulation (pp. 74–80). Australia: Christchurch.
Wong, M. T. F., & Harper, R. J. (1999). Use of on-ground gamma-ray spectrometry to measure plant-available potassium and other topsoil attributes. Australian Journal of Soil Research, 37(2), 267–277.
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We thank the German Federal Ministry of Education and Research for funding our research. We are also grateful to Nyika Moses Laizer for field assistance, as well as Elirehema Swai and Aivan Onesmo who always made things work.
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Reinhardt, N., Herrmann, L. Fusion of indigenous knowledge and gamma spectrometry for soil mapping to support knowledge-based extension in Tanzania. Food Sec. 9, 1271–1284 (2017). https://doi.org/10.1007/s12571-017-0663-5
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DOI: https://doi.org/10.1007/s12571-017-0663-5