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Soil and landscape affecting technology transfer targeting subsistence farmers in central Tanzania

  • Nadja Reinhardt (a1), Angela Schaffert (a2), Filippo Capezzone (a3), Emmanuel Chilagane (a4), Eliherema Swai (a5), Cornel Lawrence Rweyemamu (a4), Jörn Germer (a2), Folkard Asch (a2) and Ludger Herrmann (a1)...


This article deals with technology transfer from science to agriculture with pearl millet (Pennisetum glaucum (L.)R.Br.) in central Tanzania as example. The major question is which validity recommendations from different types of field experiments have and how geo-information (i.e. soil and landscape position) can lead to more site-specific recommendations. Tied ridging and reduced amounts of placed fertilizer during sowing were tested to increase yields on researcher-managed plots on-station, demonstration plots in villages, and farmer-managed plots on-farm. While on-station trials provided potential yield effects, physical distance to the station and differing conditions led to a higher informational value of village plots that mirror the context of local farmers. The treatments often resulted in significant yield increase. Soil and relief information and distance to settlements (i.e. gradient of management intensity) are key factors for data variability in on-farm trials. Unexplained variability is introduced through leaving degrees of freedom with respect to management to the farmer. Apart from soil and physiographic information, the latter should be part of a detailed data collection procedure in agronomic trials in large numbers addressing Sub-Saharan smallholder farming. Balanced data sets with dispersed trials on crucial soil and relief units are essential for future research.


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Allen, R.G., Pereira, L.S., Smith, M., Raes, D. andWright, J.L. (2005). FAO-56 dual crop coefficient method for estimating evaporation from soil and application extensions. Journal of Irrigation and Drainage Engineering 131, 213.
Bielders, C.L. andGerard, B. (2015). Millet response to microdose fertilization in south-western Niger: Effect of antecedent fertility management and environmental factors. Field Crops Research 171, 165175.
Elifadhili, D. (2013). Assessment of agricultural extension services in Tanzania. A case study of Kyela, Songea Rural, and Morogoro Rural Districts. Report. Available at: (accessed 14 March 2018).
Franke, A.C., Baijukya, F., Kantengwa, S., Reckling, M., Vanlauwe, B. andGiller, K.E. (2016). Poor farmers – poor yields: Socio-economic, soil fertility and crop management indicators affecting climbing bean productivity in northern Rwanda. Experimental Agriculture. Available at: (accessed 05 April 2018).
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.
Guttormsen, A.G. andRoll, K.H. (2014). Production risk in a subsistence agriculture. Journal of Agricultural Education and Extension 20, 133145.
Herrmann, L., Graef, F., Weller, U. andStahr, K. (2001). Land use planning on the basis of geomorphic units: experiences with the SOTER approach in Niger and Benin. Zeitschrift für Geomorphologie Supplementband 124, 111123.
Herrmann, L., Haussmann, B.I.G., van Mourik, T., Traoré, P.S., Oumarou, H.M., Traoré, K., Ouedraogo, M. andNaab, J. (2013). Coping with climate variability and change in research for development targeting West Africa : Need for paradigm changes. Sécheresse 24, 294303.
IUSS Working Group. (2015). World Reference Base for Soil Resources 2014. Rome: FAO.
Kahimba, F.C., Mutabazi, D.K., Tumbo, S.D., Masuki, K.F. andMbungu, W.B. (2014). Adoption and scaling up of conservation agriculture in Tanzania. Case study Arusha and Dodoma Regions. Natural Resources 5, 161176.
Kamhambwa, F. (2014). Consumption of Fertilizers and Fertilizer Use by Crop in Tanzania. New York: Academic Press.
Kanyeka, E., Kamala, R. andKasuga, R. (2007). Improved Agricultural Technologies Recommended in TANZANIA. 1st edition. Dar es Salaam, Tanzania: Department of Research and Training, Ministry of Agriculture Food Security and Cooperatives.
Khairwal, I.S., Rai, K.N., Diwakar, B., Sharma, Y.K., Rajpurohit, B.S., Nirwan, B. andBhattacharjee, R. (2007). Pearl Millet: Crop Management and Seed Production Manual. Patancheru 502. Andhra Pradesh, India: International Crops Research Institute for the Semi-Arid Tropics.
Kilasara, M., Boa, M.E., Swai, E.Y., Sibuga, K.P., Boniface, H.J.M. andKisetu, E. (2015). Effect of in situ soil water harvesting techniques and local plant nutrients sources on grain yield of drought resistance sorghum varieties in semi-arid zone Tanzania. In Sustainable Intensification to Advanced Food Security and Enhance Climate Resilience in Africa, 255271 (Eds Lal, R., Singh, B.R., Mwaseba, D.L., Kraybill, D., Hansen, D.O. and Eik, L.O.) Switzerland: Springer International Publishing.
Kimenye, L. (2014). Best-bet Technologies for Addressing Climate Change and Variability in Eastern Central Africa. Entebbe: ASARECA (Association for Strengthening Agricultural Research in Eastern and Central Africa).
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.
Milne, G. (1935). Some suggested units for classification and mapping, particularly for East African soils. Soil Research 4, 183198.
Reinhardt, N. andHerrmann, L. (2017). Fusion of indigenous knowledge and gamma spectrometry for soil mapping to support knowledge-based extension in Tanzania. Food Security 9, 12711284.
Roy, J., Littell, R.C., Milliken, G.A., Stroup, W.W., Wolfinger, R.D. andSchabenberger, O. (2007). SAS for mixed models. Journal Biopharmaceutival Statistics 17, 363365.
TMA. (2013). Weather Data Dodoma Airport. Dodoma, Tanzania: Tanzanian Meteorological Agency.
Trans-SEC (Innovating strategies to safeguard food security using technology and knowledge transfer: a people-centered approach) factsheet. (2016). UPS 1a: Rainwater harvesting for improving smallholder farmer’s sole and intercrop yields under a rain-fed farming system. Available at: (accessed 26 March 2018)
UNEP (United Nations Environment Program). (undated). Avaliable at (accessed 21 August 2018).
Vanlauwe, B. andGiller, K.E. (2006). Popular myths around soil fertility management in sub-Sahara Africa. Agricultural Ecosystems & Environment 116, 3446.
Vanlauwe, B., Coe, R. andGiller, K.E. (2017). Beyond averages: New approaches to understand heterogeneity and risk of technology success or failure in smallholder farming. Experimental Agriculture, 1–23. doi: 10.1017/S0014479716000193.


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