Identification of plant genetic resources with high potential contribution to soil fertility enhancement in the Sahel, with special interest in fallow vegetation

    Tobita, S and Shinjo, H and Hayashi, K and Matsunaga, R and 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: Innovations as Key to the Green Revolution in Africa. Exploring the Scientific Facts . Springer, Netherlands, pp. 701-706. ISBN 978-90-481-2541-8

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    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

    Item Type: Book Section
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Series Name: Exploring the Scientific Facts
    Uncontrolled Keywords: Biological nitrogen fixation; Fallow vegetation; ISFM; Leguminous plants; Soil organic matter
    Subjects: Mandate crops > Millets
    Depositing User: Ms K Syamalamba
    Date Deposited: 01 Aug 2013 05:58
    Last Modified: 20 Sep 2013 13:02
    URI: http://oar.icrisat.org/id/eprint/7021
    Acknowledgement: UNSPECIFIED
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