Field performance of new cowpea cultivars inoculated with efficient nitrogen‑fixing rhizobial strains in the Brazilian Semiarid

Authors

  • Rita de Cássia Nunes Marinho UFPI
  • Rafaela Simão Abrahão Nóbrega UFRB
  • Jerri Édson Zilli Embrapa Agrobiologia
  • Gustavo Ribeiro Xavier Embrapa Agrobiologia
  • Carlos Antônio Fernandes Santos Embrapa Semiárido
  • Saulo de Tarso Aidar Embrapa Semiárido
  • Lindete Míria Vieira Martins UNEB
  • Paulo Ivan Fernandes Júnior Embrapa Semiárido

DOI:

https://doi.org/10.1590/S1678-3921.pab2014.v49.18942

Keywords:

Bradyrhizobium, Microvirga vignae, Vigna unguiculata, biological nitrogen fixation, inoculant

Abstract

The objective of this work was to evaluate the contribution of efficient nitrogen‑fixing rhizobial strains to grain yield of new cowpea cultivars, indicated for cultivation in the Brazilian Semiarid region, in the sub‑medium of the São Francisco River Valley. Two experiments were set up at the irrigated perimeters of Mandacaru (Juazeiro, state of Bahia) and Bebedouro (Petrolina, state of Pernambuco). The treatments consisted of single inoculation of five rhizobial strains – BR 3267, BR 3262, INPA 03‑11B, UFLA 03‑84 (Bradyrhizobium sp.), and BR 3299T (Microvirga vignae) –, besides a treatment with nitrogen and a control without inoculation or N application. The following cowpea cultivars were evaluated: BRS Pujante, BRS Tapaihum, BRS Carijó, and BRS Acauã. A randomized complete block design, with four replicates, was used. Inoculated plants showed similar grain yield to the one observed with plants fertilized with 80 kg ha‑1 N. The cultivars BRS Tapaihum and BRS Pujante stood out in grain yield and protein contents when inoculated, showing their potential for cultivation in the sub‑medium of the São Francisco River Valley.

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Published

2014-06-18

How to Cite

Marinho, R. de C. N., Nóbrega, R. S. A., Zilli, J. Édson, Xavier, G. R., Santos, C. A. F., Aidar, S. de T., … Fernandes Júnior, P. I. (2014). Field performance of new cowpea cultivars inoculated with efficient nitrogen‑fixing rhizobial strains in the Brazilian Semiarid. Pesquisa Agropecuaria Brasileira, 49(5), 395–402. https://doi.org/10.1590/S1678-3921.pab2014.v49.18942

Issue

Section

MICROBIOLOGY