Phosphorus Uptake by Pigeon Pea and Its Role in Cropping Systems of the Indian Subcontinent

    Noriharu, Ae and Arihara, J and Okada, K and Yoshihara, T and Johansen, C (1990) Phosphorus Uptake by Pigeon Pea and Its Role in Cropping Systems of the Indian Subcontinent. Science, 248 (4954). pp. 477-480. ISSN 0036-8075

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    Abstract

    Pigeon pea was shown to be more efficient at utilizing iron-bound phosphorus (Fe-P) than several other crop species. This ability is attributed to root exudates, in particular piscidic acid and its p-O-methyl derivative, which release phosphorus from Fe-P by chelating Fe3+. Pigeon pea is normally intercropped with cereals under low-input conditions in the Indian subcontinent. Although pigeon pea can utilize the relatively insoluble Fe-P, intercropped cereals must rely on the more soluble calcium-bound phosphorus. This finding suggests that cultivation of pigeon pea increases total phosphorus availability in cropping systems with low available phosphorus.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Mandate crops > Pigeonpea
    Depositing User: Library ICRISAT
    Date Deposited: 15 Dec 2011 12:53
    Last Modified: 16 Sep 2013 12:21
    URI: http://oar.icrisat.org/id/eprint/4979
    Official URL: http://dx.doi.org/10.1126/science.248.4954.477
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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