Adding a soil fertility dimension to the global farming systems approach, with cases from Africa
E.M.A. Smaling a,b,*, J. Dixon c a International Institute for Geo-Information Science and Earth Observation (ITC), P.O. Box 6, 7500 AA Enschede, Netherlands b Plant Production Systems, Wageningen University, P.O. Box 430, 6700 AK Wageningen, Netherlands c International Maize and Wheat Improvement Centre (CIMMYT), Apdo Postal 6-641, Mexico 06600, D.F., Mexico Available online 2 May 2006
Abstract The global farming systems (GFS) approach is extended by adding a soil fertility and nutrient management dimension for Africa’s forestbased, maize mixed, cereal–root crop mixed, and agro-pastoral millet/sorghum farming systems. Use is made of sustainable livelihood concepts, translated into farmer capitals (natural, physical, financial, human, social), and the indicator-based DPSIR (driving force-pressurestate-impact-response) framework for environmental reporting. State and impact indicators show, for each GFS, levels of nutrient stocks and flows, respectively. In case of nutrient depletion, soils may (i) initially still be fertile enough to provide reasonable and stable yields, (ii) support declining yields, or (iii) support low yields at low fertility level. In the latter case, food security is generally at stake. Response indicators include the level of uptake of improved integrated nutrient management strategies at land user level, and the enforcement of new and enabling pro-agriculture and pro-environment policies. Although the extended GFS have no direct relevance for farm-level interventions, the approach can be used to frame soil fertility research priorities and policies at a regional level. # 2006 Elsevier B.V. All rights reserved.
Keywords: Soil fertility; Nutrient stocks; Nutrient flows; Integrated nutrient management; Farming systems; Indicators; Sub-Saharan Africa
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References: Abegaz, A., 2005. Farm management in mixed crop–livestock systems in the Northern Highlands of Ethiopia. Ph.D. thesis. Wageningen University, The Netherlands. ´ Bado, B.V., Sedogo, M.P., Cescas, M.P., Lompo, F., Bationo, A., 1997. Effet ` ¨ a long terme des fumures sur le sol et les rendements du maıs au Burkina ´ Faso. Cah. d’Etud. Rech. Fran. 6, 571–575. Batjes, N.H., 2001. Options for increasing carbon sequestration in West African soils: an exploratory study with special focus on Senegal. Land Degrad. Develop. 12, 131–142. Bebbington, A., 1999. Capitals and capabilities: a framework for analyzing peasant viability, rural livelihoods and poverty. World Develop. 27, 2021–2044. Blackie, M., Albright, K., 2005. A lesson learning study from the farm inputs promotions project (FIPS) in Kenya (with a special emphasis on public–private partnerships for input provision and possibilities for regional upscaling). Report for DFID, London. Brand, J., Pfund, J.L., 1998. Site and watershed-level assessment of nutrient dynamics under shifting cultivation in eastern Madagascar. Agric. Ecosyst. Environ. 71, 169–183. Bridges, E.M., Hannam, I.O., Oldeman, L.R., Penning de Vries, F.W.T., Scherr, S.J., Sombatpanit, S., 2001. Response to land degradation. Soil and Water Conservation Society of Thailand, Science Publishers Inc., USA and UK. Defoer, T., 2000. Moving methodologies. Learning about integrated soil fertility management in Sub-Saharan Africa. Ph.D. thesis Wageningen University, The Netherlands. De Jager, A., Onduru, D., Walaga, C., 2004. Facilitated learning in soil fertility management: assessing potentials of low-external input technologies in east African farming systems. Agric. Syst. 79, 205–223. De Ridder, N., Breman, H., Van Keulen, H., Stomph, T.J., 2004. Revisiting a ‘cure against land hunger’: soil fertility management and farming systems dynamics in the West African Sahel. Agric. Syst. 80, 109–131. Dixon, J., Gulliver, A., Gibbon, D., 2001. Farming systems and poverty. In: Improving farmers’ livelihoods in a changing world, FAO/World Bank, Rome/Washington, DC. Dumanski, J. (Ed.), 2000. Indicators of Land Quality and Sustainable Land management. Agric. Ecosyst. Environ. 81 (special issue). Enyong, L.A., Debrah, S.K., Bationo, A., 1999. Farmers’ perceptions and attitudes towards introduced soil-fertility enhancing technologies in western Africa. Nutrient Cycl. Agroecosyst. 53, 177–187. FAO, 2003. Assessment of soil nutrient balance. Approaches and methodologies. FAO Fertilizer and Plant Nutrition Bulletin 14. FAO, Rome. FAO, 2004a. Fertilizer use by crop in Brazil. Land and Plant Nutrition Management Service (AGLL), Rome. FAO, 2004b. Scaling soil nutrient balances. Enabling mesolevel applications for African realities. FAO Fertilizer and Plant Nutrition Bulletin 15, FAO, Rome. E.M.A. Smaling, J. Dixon / Agriculture, Ecosystems and Environment 116 (2006) 15–26 Faerge, J., Magid, J., 2004. Evaluating NUTMON nutrient balancing in Sub-Saharan Africa. Nutr. Cycl. Agro-Ecos. 69, 101–110. Fernandez-Rivera, S., Okike, I., Manyong, V., Williams, T.O., Krushka, R.L., Tarawali, S.A., 2004. Classification and description of the major farming systems incorporating ruminant livestock in West Africa. In: Williams, T.O., Tarawali, S.A, Hiernaux, P., Fernandez-Rivera, S. (Eds.), Sustainable crop-livestock production for improved livelihoods and natural resource management in West Africa. Proceedings of the International Conference Held at International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 19–22 November, 2001. ILRI (International Livestock research Institute), Nairobi, Kenya and CTA (Technical Centre for Agricultural and Rural Cooperation, ACP-EC), Wageningen, The Netherlands, pp. 89–122. Gabre-Madhin, E.Z., Haggblade, S., 2004. Successes in African Agriculture: results of an expert survey. World Develop. 32, 745–766. Gbadegesin, S., Areola, O., 1987. Soil factors affecting maize yields in the south-western Nigerian savanna and their relation to land suitability assessement. Soil Survey Land Eval. 7, 167–175. Gisladottir, G., Stocking, M., 2005. Land degradation control and its global environmental benefits. Land Degrad. Develop. 16, 99–112. Hartemink, A.E., 2003. Soil Fertility Decline in the Tropics (with case studies on plantations). ISRIC, Wageningen, NL, and CABI, Wallingford, UK. Hilhorst, T., Muchena, F.M. (Eds.), 2000. Nutrients on the Move. Soil Fertility Dynamics in African Farming Systems. International Institute for Environment and Development (IIED), London, UK. ¨ ¨ ¨ Holscher, D., Moller, R.F., Denich, M., Folster, H., 1997. Nutrient input– output budget of shifting cultivation in Eastern Amazonia. Nutrient Cycl. Agroecosyst. 6, 169–179. InterAcademy Council, 2004. Realizing the promise and potential of African agriculture. Science and technology strategies for improving agricultural productivity and food security in Africa, IAC, Amsterdam. Janssen, B.H., Guiking, F.C.T., Van der Eijk, D., Smaling, E.M.A., Wolf, J., Van Reuler, H., 1990. A system for quantitative evaluation of the fertility of tropical soils (QUEFTS). Geoderma 46, 299–318. Kangasniemi, J., 2002. Financing agricultural research by producers’ organizations in Africa. In: Byerlee, D., Echeverria, R.G. (Eds.), Agricultural Research Policy in an Era of Privatization. CAB International, Wallingford, Oxon, UK, pp. 81–104. Kanmegne, J., 2004. Slash and burn agriculture in the humid forest zone of southern Cameroon. Soil quality dynamics, improved fallow management and farmers’ perception. Ph.D. thesis, Wageningen University, The Netherlands. ´ ´ Kante, S., 2001. Gestion de la fertilite des sols par classe d’exploitation au Mali-Sud. Ph.D. thesis, Wageningen University, The Netherlands. Levy, S., 2005. Starter packs: a strategy to fight hunger in developing countries? CAB International, Wallingford, UK. Manlay, R.J., Ickowicz, A., Masse, D., Floret, C., Richard, D., Feller, C., 2004. Spatial carbon, nitrogen and phosphorus budget of a village in the West African savanna. I. Element pools and structure of a mixedfarming system. Agric. Syst. 79, 55–81. Muriuki, A.W., Qureshi, J.N., 2001. Fertiliser Use Manual. Kenya Agricultural Research Institute, Nairobi, Kenya. Noble, A.D., Pretty, J., Penning de Vries, F., Bossio, D., 2004. Development of bright spots in Africa: cause for cautious optimism? Conference paper 18, presented at the NEPAD/IGAD regional conference Agricultural Successes in the Greater Horn of Africa. 23–35 November 2004. The New Partnership for Africa’s Development. OECD, 1993. OECD core set of indicators for environmental performance reviews. OECD Environment Monographs No 83. Organization for Economic Co-operation and Development, Paris. Pagiola, S., 1999. The global environmental benefits of land degradation control on agricultural land. Global Overlays Program. World Bank Environmental Paper 16. The World Bank, Washington, DC. ´ ´ Pichot, J., Sedogo, M.P., Poulain, J.F., 1981. Evolution de la fertilite d’un sol ´ ferrugineux tropical sous l’influence des fumures minerales et organiques. Agronomie Tropicale 36, 122–133. 25 Pieri, C., Dumanski, J., Hamblin, A., Young, A., 1995. Land quality indicators. World Bank Discussion Paper no. 315, World Bank, Washington, DC. Prudencio, C.Y., 1993. Ring management of soils and crops in the Westafrican semiarid tropics—the case of the Mossi farming system in Burkina Faso. Agric. Ecosyst. Environ. 47, 237–264. Rajot, J.L., 2001. Wind blown sediment mass budget of Sahelian village land units in Niger. B. Soc. Geol. Fr. 172, 523–531. Reij, C., Thiombiano, T. (Eds.), 2003. Development rural et environne´ ´ ment au Burkina Faso: la rehabilitation de la capacite productive des terroirs sur la partie nord du Plateau Central entre 1980 et 2001. ` Rapport de synthese. Project funded by DGIS/Netherlands Embassy Ouagadougou. Salasya, B.S., 2005. Crop Production and Soil Nutrient Management: an Economic Analysis of Households in Western and Central Kenya. Ph.D. thesis. Wageningen University, The Netherlands. ´ Samake, O., 2003. Integrated crop management strategies in Sahelian land use systems to improve agricultural productivity and sustainability: a case study in Mali. PhD. thesis, Wageningen University, The Netherlands. ´ Samake, O., Smaling, E.M.A., Kropff, M.J., Stomph, T.J., Kodio, A., 2005. Effects of cultivation practices on spatial variation of soil fertility and millet yields in the Sahel of Mali. Agric. Ecosyst. Environ. 109, 335– 345. Sanchez, P.A., 2002. Soil fertility and hunger in Africa. Science 295, 2019– 2020. Sanginga, N., Dashiell, K.E., Diels, J., Vanlauwe, B., Lyasse, O., Carsky, R.J., Tarawali, S., Asafo-Adjei, B., Menkir, A., Schulz, S., Singh, B.B., Chikoye, D., Keatinge, D., Ortiz, R., 2003. Sustainable resource management coupled to resilient germplasm to provide new intensive cerealgrain-legume-livestock systems in the dry savanna. Agric. Ecosyst. Environ. 100, 305–314. Santacoloma, P., 2004. Integrating soil resources into economic accounting at the farm level: a brief overview. In: International Farming Systems Conference, Orlando, Florida, USA. Schlecht, E., Hiernaux, P., 2004. Beyond adding up inputs and outputs: process assessment and upscaling in modelling nutrient flows. Nutrient Cycl. Agroecosyst. 70, 303–319. Schnier, H.F., Recke, H., Muchena, F.N., Muriuki, A.W., 1997. Towards a practical approach to fertiliser recommendations for food crop production in smallholder farms in Kenya. Nutrient Cycl. Agroecosyst. 47, 213–226. Schroth, G., Da Silva, L.F., Seixas, R., Texeira, W.G., Macedo, J.L.V., Zech, W., 1999. Subsoil accumulation of mineral nitrogen under polyculture and monoculture plantations, fallow and primary forest in a ferralitic Amazonian upland soil. Agric. Ecosyst. Environ. 75, 109–120. Schroth, G., Seixas, R., De Silva, L.F., Texeira, W.G., Zech, W., 2000. Nutrient concentrations and acidity in ferralitic soil under perennial cropping, fallow and primary forest in central Amazonia. European J. Soil Sci. 51, 219–231. Scoones, I., Toulmin, C., 1999. Policies for Soil Fertility Management in Africa. DFID, London. Slingerland, M., 2000. Mixed farming: scope and constraints in West African savanna. Ph.D. thesis, Wageningen University. Tropical Resource Management Paper 34. Wageningen, The Netherlands. Smaling, E.M.A., Van de Weg, R.F., 1990. Using soil and climate maps and associated data sets to select sites for fertilizer trials in Kenya. Agric. Ecosyst. Environ. 31, 263–274. Smaling, E.M.A., Janssen, B.H., 1993. Calibration of QUEFTS, a model predicting nutrient uptake and yields from chemical soil fertility indices. Geoderma 59, 21–44. Smaling, E.M.A. (Ed.), 1998. Nutrient balances as indicators of productivity and sustainability in Sub-Saharan African agriculture. Agric. Ecosyst. Environ. 71, 283 pp. (special issue). Sterk, G., Herrmann, L., Bationo, A., 1996. Wind-blown nutrient transport and soil productivity changes in southwest Niger. Land Degrad. Develop. 7, 325–335. 26 E.M.A. Smaling, J. Dixon / Agriculture, Ecosystems and Environment 116 (2006) 15–26 Vlaming, J., Van den Bosch, H., Van Wijk, M.S., De Jager, A., Bannink, A., Van Keulen, H., 2001. Monitoring nutrient flows and economic performance in tropical farming systems. Part 1: Manual for the NUTMON Toolbox. Wageningen UR, The Netherlands. ¨ Vlek, P.L.G., Kuhne, R.F., Denich, M., 1997. Nutrient resources for crop production in the tropics. In: Greenland, D.J., Gregory, P.J., Nye, P.H. (Eds.), Land Resources: on the Edge of the Malthusian precipe? CAB International, in association with the Royal Society, UK, pp. 115–123. Windmeijer, P.N., Andriesse, W., 1993. Inland Valleys in West Africa: an Agro-ecological Characterization of Rice-growing Environments. Publication 52, ILRI, Wageningen, The Netherlands. WSSD (World Summit on Sustainable Development), 2002. Plan of implementation. World Summit on Sustainable Development, Johannesburg. Yamada T., Lopes A.S., 1999. Balanco de nutrientes na agricultura Brasi¸ leira. In: Siqueira, J.O., et al. (Eds.), Inter-relacao fertilidade, biologia do ¸˜ solo e nutricao de plantas. SBCS, Lavras: UFLA/DCS, Vicosa, Brazil, ¸˜ ¸ pp. 143–161. Young, A., 1998. Land Resources. Now and for the Future. Cambridge University Press, UK, pp. 319. ´ Zougmore, R., Mando, A., Ringersma, J., Stroosnijder, L., 2003. Effect of combined water and nutrient management on runoff and sorghum yield in semi-arid Burkina Faso. Soil Use Manage. 19, 257–264. Stoorvogel, J.J., Smaling, E.M.A., Janssen, B.H., 1993. Calculating soil nutrient balances in Africa at different scales. I. Supra-national scale. Fertil. Res. 35, 227–235. Stroosnijder, L., Van Rheenen, T. (Eds.), 2001. Agro-silvo-pastoral land use in Sahelian villages. Adv. Geoecology 33. Catena Verlag. Reiskirchen, Germany. UN Millenium Project, 2005. Investing in development: a practical plan to achieve the Millenium Development Goals. UN Development Programme, New York. Van den Bosch, H., Gitari, J.N., Ogaro, V.N., Maobe, S., Vlaming, J., 1998. Monitoring nutrient flows and economic performance in African farming systems (NUTMON). III. Monitoring nutrient flows and balances in three districts in Kenya. Agric. Ecosyst. Environ. 71, 62–80. Van Keulen, H., Van Heemst, H.D.J., 1982. Crop response to the supply of macronutrients. Agricultural Research Report 916. Pudoc, Wageningen. Van Keulen, H., Breman, H., 1990. Agricultural development in the West African Sahelian region: a cure against land hunger? Agric. Ecosyst. Environ. 32, 177–197. Van Noordwijk, M., 1999. Nutrient cycling in ecosystems versus nutrient budgets of agricultural systems. In: Smaling, E.M.A., Oenema, O., Fresco, L.O. (Eds.), Nutrient Disequilibria in Agroecosystems. CAB International, Wallingford, UK, pp. 1–26.