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Nodulation and symbiotic nitrogen fixation of cowpea (Vigna unguiculata (L.) Walp)

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Summary

Rhizobium strains CIAT 301, CIAT 79 and SLM 602 were tested and found effective in the nodulation and nitrogen fixation of cowpea cv. MI-35 (Vigna unguiculata (L.) Walp) plants in growth chamber experiments. Fresh weight of nodules increased with plant age initially and stabilized in 20–30 days from planting, followed by a secondary flush of nodule growth after 30 days. Apparent nitrogen fixation per gram nodule fresh weight reached a maximum in 20–30 days after planting and then decreased, even though a flush of new nodules was produced.

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Authors and Affiliations

  1. Department of Agronomy, The Pennsylvania State University, 16802, University Park, PA, USA

    L. Senanayake & D. P. Knievel

  2. Department of Molecular and Cell Biology, The Pennsylvania State University, 16802, University Park, PA, USA

    S. E. Stevens Jr.

Authors
  1. L. Senanayake
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  2. D. P. Knievel
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  3. S. E. Stevens Jr.
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Senanayake, L., Knievel, D.P. & Stevens, S.E. Nodulation and symbiotic nitrogen fixation of cowpea (Vigna unguiculata (L.) Walp). Plant Soil 99, 435–439 (1987). https://doi.org/10.1007/BF02370888

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  • DOI: https://doi.org/10.1007/BF02370888

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