African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6848

Full Length Research Paper

Symbiotic efficiency of pea (Pisum sativum) rhizobia association under field conditions

Aleksander Westphal Muniz
  • Aleksander Westphal Muniz
  • Embrapa, Rodovia AM 10, Manaus 69010-970, Brazil.
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Murilo Dalla Costa
  • Murilo Dalla Costa
  • Epagri, Rua João José Godino , Lages 88502-970, Brazil.
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Enilson Luiz Saccol de Sa
  • Enilson Luiz Saccol de Sa
  • UFRGS, Av. Bento Gonçalves 7712, Porto Alegre 91540-000, Brazil.
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Ana Beatriz Fiuza
  • Ana Beatriz Fiuza
  • Embrapa, Rodovia AM 10, Manaus 69010-970, Brazil.
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Edemar Brose
  • Edemar Brose
  • Rua Papagaio 185, Bombas 88215-000, Brazil.
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  •  Received: 22 February 2017
  •  Accepted: 26 July 2017
  •  Published: 10 August 2017


The objective of this study was to evaluate the symbiotic efficiency of rhizobia under field conditions for peas (Pisum sativum L.). Ten treatments were evaluated and divided into eight strains of rhizobia and two uninoculated strains as controls (with and without the addition of mineral N). The variables analyzed were: Nodulation, dry mass of the aerial part, total N of the aerial section, pea production and symbiotic efficiency. The inoculated rhizobia strains had effects on the number and mass of nodules, accumulated N in the aerial part and pea grains production. The strain EEL7802 presented the highest symbiotic efficiency for peas. The inoculation may allow cost reduction due to the equivalence with nitrogen fertilization. Studies in other soil types are needed to confirm the efficiency of this strain.


Key words: Pisum sativum, Rhizobium leguminosarum, nodulation, nitrogen biological fixation.