Abstract
The sandy soil in the Sahel is characterized as low inherent fertility, that is, having nutrient deficiency (total N and available P), low organic matter and high risk of erosion. Under the concept of integrated soil fertility management (ISFM), possible contribution of natural inhabitant plants to the improvement of soil fertility in the Sahel was evaluated. A broad variation in δ 15N values was observed among the plant species commonly found in cropland and fallow land of the Sahelian zone. Annual leguminous herbs, Cassia mimosoides (Caesalpiniaceae) and Alysicarpus ovalifolius (Papilionaceae), had low δ 15N values, showing their higher dependency on biological nitrogen fixation. They will be efficiently utilized as an extensive means of soil fertility management, for example, through more encouraged incorporation into the fallow vegetation. Ctenium elegans, Eragrostis tremula and Schizachyrium exile, greatly dominating annual grass species in the fallow land, though their δ 15N values were high, would contribute to the soil fertility by supplying a significant amount of organic matter.
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References
CGIAR (2002) Combating soil fertility degradation in Africa. Paper presented in the Annual General Meeting 2002, Washington, DC, USA, 30–31 Oct 2002
Gandah M, Bouma J, Brouwer J, Hiernaux P, van Duivenbooden N (2003) Strategies to optimize allocation of limited nutrients to sandy soils of the Sahel: a case study from Niger, west Africa. Agric Ecosyst Environ 94:311–319
Herrmann L (1996) Straubdeposition auf Böden West Afrikas. Eigenschaften und herkunfisgebiete der Stäube und ihr Einflub auf Boden und Standortseigenschaften. PhD thesis, Universität Hohenheim, Stuttgart, Germany, 239pp
Hiernaux P (1998) Effects of grazing on plant species composition and spatial distribution in rangelands of the Sahel. Plant Ecol 138:191–202
Ikazaki K, Shinjo H, Tanaka U, Kosaki T (2007) Development of a new sediment catcher to evaluate the effect of wind erosion on carbon dynamics in the Sahel, west Africa. Abstracts of the international symposium on organic matter dynamics in agro-ecosystems, Poitier, France, 16–19 July 2007
INRAN (1977) Lexique de Noms Vernaculaires de Plantes du Niger, 2nd edn, INRAN, Niamey, Niger
Ito O, Matsunaga R, Kumashiro T (2005) Challenge for improvement of soil fertility in West Africa. Paper presented at a J-FARD & JIRCAS symposium on perspectives of R & D for improving agricultural productivity in Africa, Tokyo, Japan, 14–15 July 2005
Lal R (2007) Promoting technology adoption in sub-Saharan Africa, South Asia. CSA News 52(7):10
Manlay RJ, Kaire M, Masse D, Chotte J-L, Ciornei G, Floret C (2002) Carbon, nitrogen and phosphorus allocation in agro-ecosystems of a West African savanna. I. The plant component under semi-permanent cultivation. Agric Ecosyst Environ 88:215–232
Matsunaga R, Singh BB, Adamou M, Tobita S, Hayashi K, Kamidohzono A (2006) Evaluation of cowpea germplasm in the infertile sandy soil of the Sahelian zone. II. Grain and fodder yield. Abstracts of the 99th annual meeting of the japanese society of tropical agriculture, Tsukuba, Japan, 31 Mar–1 Apr 2006
Matsunaga R, Singh BB, Adamou M, Tobita S, Hayashi K, Kamidohzono A (2007) Evaluation of cowpea germplasm in the infertile sandy soil of the Sahelian zone. III. Nitrogen fixation and phosphorus utilization. Abstracts of the 101st annual meeting of the Japanese society of tropical agriculture, Tokyo, Japan, 30–31 Mar 2007
Matsunaga R, Tobita S (2007) Identification of improved dual-purpose cowpea varieties for the Sahel. JIRCAS Annual Report 2006, pp 28–29
Miura R, Tobita S (2005) Fakara Plants – A photographic guide to common plants of Sahel – (Preliminary Version). http://ss.jircas.affrc.go.jp/project/africa_dojo/Fakara_plants/Fakara_Plants_home.html
Ramesch J (1999) In the balance? Evaluating soil nutrient budgets for an agro-pastoral villages of Southern Mali, Managing Africa’s Soils no. 9. Russell Press, Nottingham
Sanginga N (2003) Role of biological nitrogen fixation in legume based cropping systems; a case study of West Africa farming systems. Plant Soil 252:25–39
Suzuki K, Matsunaga R, Hayashi K, Okada K (2007) The effect of the different managements continued by farmers on the nitrogen supplying capacity of the soils in the Fakara region, Niger. Abstracts of the 101st annual meeting of the Japanese society of tropical agriculture, Tokyo, Japan, 30–31 Mar 2007
Unkovich M, Pate JS (2001) Assessing N2 fixation in annual legumes using 15N natural abundance. In: Unkovich M, Pate J, McNeill A, Gibbs DJ (eds) Stable isotope techniques in the study of biological processes and functioning of ecosystems. Kluwer, Dordrecht, pp 103–118
Acknowledgements
This study was conducted as part of the collaborative research project between JIRCAS and ICRISAT on the “Improvement of Fertility of Sandy Soils in the Semi-Arid Zone of West Africa through Organic Matter Management”. The authors thank the staff of ICRISAT-WCA, especially Mr. Sodja Amadou for his assistance in Fakara area.
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Tobita, S. et al. (2011). Identification of Plant Genetic Resources with High Potential Contribution to Soil Fertility Enhancement in the Sahel, with Special Interest in Fallow Vegetation. In: Bationo, A., Waswa, B., Okeyo, J., Maina, F., Kihara, J. (eds) Innovations as Key to the Green Revolution in Africa. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-2543-2_71
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DOI: https://doi.org/10.1007/978-90-481-2543-2_71
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