Paper · 2014 · Pesquisa Agropecuária Brasileira

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

Rita de Cássia Nunes Marinho; Rafaela Simão Abrahão Nóbrega; Jerri Édson Zilli; et al.

3
claims
6
verbatim quotes
42
citations
2
research areas
✓
Open access · cc-by

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 (Bradyrhizobiumsp.), 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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Claims 3

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Inoculated cowpea had grain yield similar to plants fertilized with 80 kg ha-1 N.

Treatment
Inoculatede0
Interactor
rhizobial strainst0symbiont
Outcome
grain yielde0
Direction
similare0
Comparator
plants fertilized with 80 kg ha-1 Ne0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Inoculated plants showed similar grain yield to the one observed with plants fertilized with 80 kg ha-1 N”

✓ located verbatim in the source · abstract, characters 832–937 · show in text ↑
t0

“cowpea cultivars inoculated with efficient nitrogen-fixing rhizobial strains”

✓ located verbatim in the source · title, characters 25–101 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Inoculated BRS Tapaihum stood out for grain yield and protein content.

Material
BRS Tapaihume0
Treatment
inoculatede0
Interactor
rhizobial strainst0symbiont
Outcome
grain yield and protein contentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The cultivars BRS Tapaihum and BRS Pujante stood out in grain yield and protein contents when inoculated”

✓ located verbatim in the source · abstract, characters 939–1043 · show in text ↑
t0

“cowpea cultivars inoculated with efficient nitrogen-fixing rhizobial strains”

✓ located verbatim in the source · title, characters 25–101 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Inoculated BRS Pujante stood out for grain yield and protein content.

Material
BRS Pujantee0
Treatment
inoculatede0
Interactor
rhizobial strainst0symbiont
Outcome
grain yield and protein contentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The cultivars BRS Tapaihum and BRS Pujante stood out in grain yield and protein contents when inoculated”

✓ located verbatim in the source · abstract, characters 939–1043 · show in text ↑
t0

“cowpea cultivars inoculated with efficient nitrogen-fixing rhizobial strains”

✓ located verbatim in the source · title, characters 25–101 · show in text ↑

inoculation · yield · Vigna unguiculata (cowpea)Results differ

116 papers: 99 positive, 17 negative or no effect

16 papers in the same direction as this paper · 99 reporting no difference from an alternative

  1. positive
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.