Nodulation, gas exchanges and production of peanut cultivated with Bradyrhizobium in soils with different textures


  • Emanuelle Barros Sobral de Melo Universidade Estadual da Pabaíba-UEPB
  • Liziane Maria de Lima Embrapa Algodão
  • Paulo Ivan Fernandes-Júnior Embrapa Semiárido
  • Saulo de Tarso Aldar Embrapa Semiárido
  • Maria Aline Oliveira Freire Embrapa Algodão
  • Rosa Maria Mendes Freire Embrapa Algodão
  • Roseane Cavalcanti dos Santos Embrapa Algodão



Arachis hypogaea, fertilization, gas exchange, management


Nitrogen fertilization from biological source is an uncommon practice for peanut growers due to the limited results, mainly in environments with water restriction. In this study, the response of a commercial Bradyrhizobium was evaluated on the nodulation and production of peanuts grown in sandy and medium textured soils. Two experiments using different soils were carried out in the field during the dry season, in Campina Grande, Paraíba State, Brazil. Three peanut genotypes were submitted to the following treatments: 1-no nitrogen fertilization (control), 2- chemical fertilization (ammonium sulfate) and 3- inoculation with Bradyrhizobium [commercial strain BR 1405 (SEMIA 6144)]. A completely randomized 3x3 factorial design was adopted with five repetitions for both experiments. The evaluates variables were: height of the main stem, number of nodes/plant, root length, root dry weight, weight of pods/plant and number of pods/plant. In addition, gas exchanges were estimated using IRGA apparatus. Both genotypes (BRS Havana and L7 Bege) were benefited in relation to production due to an inoculation with SEMIA 6144. No physiological response was verified in genotypes or N-treatments to gas exchange, excepting for the Ci/Ca ratio in the medium textured soil experiment. BRS Havana showed low Ci/Ca ratio in Bradyrhizobium treatment, indicating that SEMIA 6144 improved the plants photosynthetic efficiency.


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Author Biographies

Emanuelle Barros Sobral de Melo, Universidade Estadual da Pabaíba-UEPB

Pós-Graduação em Ciências Agrárias

Liziane Maria de Lima, Embrapa Algodão

Laboratório de Biotecnologia

Paulo Ivan Fernandes-Júnior, Embrapa Semiárido

Laboratório de Microbiologia do Solo

Saulo de Tarso Aldar, Embrapa Semiárido

Laboratório de Fisiologia Vegetal

Maria Aline Oliveira Freire, Embrapa Algodão

Laboratório de Biotecnologia

Rosa Maria Mendes Freire, Embrapa Algodão

Laboratório de Solos e Nutrição de Plantas

Roseane Cavalcanti dos Santos, Embrapa Algodão

Laboratório de Biotecnologia


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How to Cite

Melo, E. B. S. de, Lima, L. M. de, Fernandes-Júnior, P. I., Aldar, S. de T., Freire, M. A. O., Freire, R. M. M., & Santos, R. C. dos. (2016). Nodulation, gas exchanges and production of peanut cultivated with Bradyrhizobium in soils with different textures. Comunicata Scientiae, 7(2), 160–166.



Original Article