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    Environmental constraints to nodulation and nitrogen fixation of Phaseolus vulgaris L. in Tanzania. I. A survey of soil fertility, root nodulation and multi-locational responses to Rhizobium inoculation

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    Authors
    Amijee, F
    Giller, Ken E.
    Date
    1998
    Language
    en
    Type
    Journal Article
    Review status
    Peer Review
    ISI journal
    Accessibility
    Open Access
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    Permanent link to cite or share this item: https://hdl.handle.net/10568/43411
    External link to download this item: http://www.bioline.org.br/request?cs98018
    Abstract/Description
    A survey of selected fields in bean growing regions of Tanzania and a more detailed survey of bean fields in the Lushoto area of northern Tanzania were carried out to establish soil properties limiting the extent of root nodulation of Phaseolus vulgaris L. Soil samples were collected and soil pH, organic matter content, cation exchange capacity and concentrations of extractable P, K, Ca and Mg determined. Plant vigour and nodulation were recorded and indigenous populations of rhizobia nodulating Phaseolus were estimated. The majority of soils were found to have very small concentrations of extractable P and this was associated with poor nodulation and poor plant vigour. In most cases there were reasonable populations of soil rhizobia present (102-104 cells/g soil) but plants were well nodulated only when soil P concentrations were adequate. A series of trials which included treatments where rhizobial inoculants were applied demonstrated no significant responses to inoculation unless the data were combined across the 10 sites. The data confirmed the need for experiments on-farm where soil nutrient concentrations (especially P) were generally much less than those found on research stations.
    AGROVOC Keywords
    rhizobium; nitrogen fixation; root nodulation; phaseolus vulgaris; potassium; fijación del nitrogeno; ondulación; potasio
    Subjects
    BEANS; SOIL HEALTH; SOIL INFORMATION;
    Countries
    Tanzania
    Regions
    Eastern Africa
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    • CIAT Articles in Journals [2634]

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