Abstract
Phosphorus (P) deficiency is a major impediment to securing crop productivity on the acid, sandy soils of Sudano-Sahelian West Africa (SSWA). However, given the low profitability of many annually applied fertilization strategies with imported P, the effects of yield-enhancing, alternative P-sources, such as rockphosphate (RP), should be considered. Therefore, the financial performance of 14 strategies—including 2 annual and 11 long-term fertilization strategies plus 1 farmers’ practice—were compared in three rainfall zones in SSWA. The comparison comprised the net present value, the annuity, the internal rate of return, and a risk analysis. Agronomic data came from a four-year, five-location trial complemented by information on farming systems, labor demands, and input–output prices. Compared with farmers’ practices, none of the P-fertilization strategies examined were financially superior at all locations. The financial performance of medium-term RP-strategies tended to increase with rainfall, but remained highly variable. Net returns to land with high rates of RP were often superior to annual inputs of mineral-P, but never the best alternatives. In most cases, the most profitable strategies comprised medium-level RP-applications with or without supplementary hill-placed NPK-fertilizer (also known as “micro-dosing”). The financial performance of medium quantities of RP sometimes increased and sometimes decreased with supplementary nitrogen (N) additions. The combination of hill-placed NPK and broadcast RP as well as N-applications with broadcast RP are alternatives to the use of RP alone. Our results can assist researchers and development institutions in advocating and implementing more effective strategies to enhance agricultural production in SSWA.
Similar content being viewed by others
References
Baidu-Forson J (1988) Characteristics of farm households and economy in Western Niger villages: some evidence from baseline surveys. In: Resource management program, Economics group, Progress Report 87. ICRISAT, Niamey 1988
Bationo A, Mokwunye AU (1991) Alleviating soil fertility constraints to increased crop production in West Africa: the experience in the Sahel. Fertil Res 29:95–115
Bationo A, Chien SH, Henao J, Christianson CB, Mokwunye AU (1990) Agronomic evaluation of two unacidulated and partially acidulated phosphate rocks indigenous to Niger. Soil Sci Soc Am J 54:1772–1777
Bationo A, Ayuk E, Ballo D, Koné M (1997) Agronomic and economic evaluation of Tilemsi phosphate rock in different agroecological zones of Mali. Nutr Cycl Agroecosyst 48:179–189
Bruentrup M (1997) Agricultural price policy and its effect on production, income, employment, and the adoption of innovations: a farming systems based analysis of cotton policy in Northern Benin, Hohenheim University dissertation; Frankfurt/M.: Europäischer Verl. der Wissenschaften (Development Economics and Policy 9)
Bruentrup M, Lamers JPA, Heidhues F (1996) The economics of millet crop residues for wind erosion control in Niger, West Africa. In: Buerkert B, Allison BE, von Oppen M (eds) Wind erosion in West Africa: the problem and its control. Markgraf Verlag, Weikersheim, pp 243–256
Buerkert A, Hiernaux P (1998) Nutrients in the West African Sudano–Sahelian zone: losses, transfers and role of external inputs. Z Pflanzenernähr Bodenkd 161:365–383
Buerkert A, Schlecht E (2013) Agricultural innovations in small-scale farming systems of Sudano–Sahelian West Africa: some prerequisites for success. Secheresse 24:322–329
Buerkert A, Bagayoko M, Bationo A, Marschner H (1997) Site-specific differences in the response of cereals and legumes to rockphosphate, crop residue mulch and nitrogen in the Sudano–Sahelian zone of West Africa. In: Renard G, Neef A, Becker K, von Oppen M (eds) Soil fertility management in West African land use systems. Margraf Verlag, Weikersheim, pp 53–59
Buerkert A, Bationo A, Piepho HP (2001) Efficient phosphorus application strategies for increased crop production in sub-Saharan West Africa. Field Crops Res 72:1–15
Buerkert A, Piepho HP, Bationo A (2002) Multi-site time trend analysis of soil fertility management effects on crop production in sub-Saharan West Africa. Exp Agric 38:163–183
Bumb LB, Johnson ME, Fuentes MA (2011) Policy options for improving regional fertilizer markets in West Africa. In: IFPRI discussion paper 01084, International Food Policy Research Institute, Washington. www.ifpri.org p. 73
Charoy J (1980) Utilisation des phosphates naturels au Niger. Agron Tropic 35(5):250–253
Dahui KP (1995) Costs determinants of phosphate rock in some West African countries. In: Gerner H, Mokwunye AU (eds) Use of phosphate rock for sustainable agriculture in West Africa. IFDC, Lomé
FAO (1980) Les Engrais et Leurs Applications. Précis à l’usage des vulgarisateurs. Collection FAO: mise en valeur des terres et des eaux, no 8, 3eme édition. FAO, Rome
Gerner H, Banaante CA (1995) Economic aspects of phosphate rock application for sustainable agriculture in West Africa. In: Gerner H, Mokwunye AU (eds) Use of phosphate rock for sustainable Agriculture in West Africa. Miscellaneous Fertilizers Studies 11, IFDC, Lomé, pp 134–141
Gittinger JP (1982) Economic analysis of agricultural projects. EDI series in economic development. John Hopkins University Press, Baltimore-London
Johnson AKC (1995) Inventory and mining of local mineral resources in West Africa. In: Gerner H, Mokwunye AU (eds) Use of phosphate rock for sustainable Agriculture in West Africa. Miscellaneous Fertilizers Studies 11, IFDC, Lomé
Khasawneh FE, Doll EC (1978) The use of phosphate rock for direct application to soils. Adv Agron 30:155–206
Kuyvenhoven A, Chien SH (2004) Economic factors in the adoption and utilisation of phosphate rocks. In: Casanova E, Zapata E, Roy RN (eds) Use of phosphate rocks for sustainable Agriculture. FAO bulletin, Fertilizer and plant nutrition bulletin 13, FAO, Rome, pp 99–116
Lamers JPA (1998) Wind erosion in Niger: farmer perceptions, traditional techniques to prevent and combat wind erosion, and farmer adoption of modern soil conservation technologies. In: Shivakumar MVK, Zoebisch MA, Koala S, Maukonen T (eds) Wind erosion in Africa and West Asia: problems and Control Strategies. International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo
Lamers JPA, Bruentrup M (1996) Comparative advantage of single and multipurpose uses of millet stover in Niger. Agric Syst 50(3):273–285
Lamers JPA, Bruentrup M, Buerkert A (1998) The profitability of traditional and innovative mulching techniques using millet crop residues in the West African Sahel. Agric Ecosyst Environ 67:23–35
Lamers JPA, Bruentrup M, Buerkert A (2015) Financial performance of fertilisation strategies for sustainable soil fertility management in Sudano–Sahelian West Africa. Vol 1. Profitability of annual fertilisation strategies. Nutr Cycl Agroecosyst. doi:10.1007/s10705-015-9673-x
McIntire J, Hopkins J, Lamers JPA, Fussell LK (1989) The millet system of western Niger. I Crop production. ILCA, Addis Ababa, Ethiopia (unpublished)
McIntire J, Bourzat D, Pingali P (1992) Crop-livestock interaction in sub-Saharan Africa. The international bank for reconstruction and development. The World Bank, Washington, pp 1–246
Michels K, Sivakumar MVK, Allison BE (1993) Wind erosion in the Southern Sahelian zone and induced constraints to pearl millet production. Agric For Meteorol 67:65–77
Miscellaneous Fertilizers Studies 11, IFDC (1995) Use of phosphate rock for sustainable Agriculture in West Africa. Miscellaneous Fertilizers Studies 11, IFDC, Lomé
Mokwunye AU (1995) Phosphate rock as capital investment. In: Gerner H, Mokwunye AU (eds) Use of phosphate rock for sustainable Agriculture in West Africa. Miscellaneous Fertilizers Studies 11, IFDC, Lomé, pp 100–105
Nabos J, Charoy J, Pichot J (1974) Fertilisation phosphateé des sols au Niger- Utilisation des phosphates naturels de Tahoua. Agron Trop 29(11):1140–1150
Napier TL (1992) Property rights and adoption of soil and water conservation practices. In: Arsyad S, Istiqlal A, Sheng T, Moldenhauer W (eds) Conservation policies for sustainable hill slope farming., pp 193–201
Nicholson SE (2013) The West African Sahel: a review of recent studies on the rainfall Regime and its interannual variability. ISRN Meteorology. Hindawi Publishing Corporation, Cairo, pp 1–32. doi:10.1155/2013/453521
OPVN (1997) Marchés des céréales et du niébé au Niger. Office des Produits Vivriers du Niger, Système d’Information sur les Marchés (S.I.M.), Niamey, Niger
OPVN (1998) Marchés des céréales et du niébé au Niger. Office des Produits Vivriers du Niger, Système d’Information sur les Marchés (S.I.M.), Niamey, Niger
Pieri C, Steiner KG (1996) The role of soil fertility in sustainable agriculture with special reference to sub-Saharan Africa. Entwick Ländl Raum 4(96):3–6
Roesch M, Pichot J (1985) Utilisation du phosphate naturel de Tahoua en fumure de fond et en fumure d’entretien dans les sols sableux du Niger. Agron Trop 40(2):89–97
Schlecht E, Buerkert A, Tielkes E, Bationo A (2006) A critical analysis of challenges and opportunities for soil fertility restoration in Sudano–Sahelian West Africa. Nutr Cycl Agroecosyst 76:109–136. doi:10.1007/s10705-005-1670-z
Schreiber JF, Matlock WG (1978) The phosphate rock industry in north and west Africa. University of Arizona, Tuscon, pp 1–21
SIM (Système d’Information sur les Marchés Agricoles) (2012) Bulletin Hebdo 249. Ministère du Commerce Et de la Promotion du Secteur Privé, République du Niger
Sivakumar MVK (1992) Climate change and implications for agriculture in Niger. Clim Change 20:297–312
Teboh JF (1995) Phosphate rock as a soil amendment: who should bear the costs? In: Gerner H, Mokwunye AU (eds) Use of phosphate rock for sustainable Agriculture in West Africa. Miscellaneous Fertilizers Studies 11, IFDC, Lomé, pp 142–149
Vanlauwe B, Giller KE (2006) Popular myths around soil fertility management in sub-Saharan Africa. Agric Ecosyst Environ 116:34–46
Walter B (1994) Wirtschaftlichkeit der Rohphosphatanwendung in unterschiedlichen Regionen und Betriebssystemen Burkina Fasos. Farming systems and resource economics in the tropics, Vol 17. Wissenschaftsverlag, Kiel
Acknowledgments
The authors gratefully acknowledge the valuable contributions made by anonymous reviewers in the form of thorough comments on an earlier version of this manuscript. The authors also gratefully acknowledge the Deutsche Forschungsgemeinschaft (DFG) and the German Federal Ministry for Economic cooperation and Development (BMZ) for funding the field research from which the agronomic data were taken.
Author information
Authors and Affiliations
Corresponding author
Appendix
Appendix
See the Table 7.
Rights and permissions
About this article
Cite this article
Lamers, J.P.A., Bruentrup, M. & Buerkert, A. Financial performance of fertilization strategies for sustainable soil fertility management in Sudano–Sahelian West Africa. 2: Profitability of long-term capital investments in rockphosphate. Nutr Cycl Agroecosyst 102, 149–165 (2015). https://doi.org/10.1007/s10705-015-9671-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10705-015-9671-z