Abstract
The use of inoculants containing N2-fixing bacteria increases every year in cowpea crop in the North and Northeast regions of Brazil. In this context, this study aimed to evaluate the effects of inoculation with Bradyrhizobium sp. and Azospirillum brasilense in association with phosphate fertilization on the vegetative development, nodulation and yield of cowpea genotypes grown in Southern Rondônia state, Brazil. The experiment was conducted from February to May 2018, in the municipality of Colorado do Oeste, RO. The experimental design was randomized blocks in 4 × 3 × 2 factorial scheme, corresponding to four dose of phosphorus (0, 80, 120 and 160 kg ha-1 of P2O5); absence, inoculation and co-inoculation with rhizobacteria; two cowpea genotypes (White and Butter), with three replicates. Cowpea seeds were inoculated with the commercial inoculant TotalNitro Cowpea with strains of Bradyrhizobium sp. (Semia 6462 and Semia 6463); co-inoculation was performed using the commercial product, containing a combination of strains of Azospirillum brasilense, both in liquid formulation. Co-inoculation (Bradyrhizobium sp.+ Azospirillum brasilense) did not influence the production components of cowpea plants. Inoculation with Bradyrhizobium sp. associated with phosphate fertilization of 120 kg ha-1 of P2O5 was sufficient to promote maximum growth and development of cowpea plants in Amazonian soil. The genotype White had higher capacity of nodulation, dry matter production and grain yield. Inoculation of Bradyrhizobium sp. increased N and P contents in the leaves. The genotype Butter was superior to the genotype White with respect to the accumulation of P, K, Ca and Mg in the leaves.
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Claims 5
Claim · model-written summary
Co-inoculation with Bradyrhizobium sp. and Azospirillum brasilense did not influence the production components of cowpea.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- Co-inoculation (Bradyrhizobium sp.+ Azospirillum brasilense)e1
- Interactor
- Bradyrhizobium sp.
Bradyrhizobiume1symbiont - Second interactor
- Azospirillum brasilense
Azospirillum brasilensee1symbiont - Outcome
- production componentse1
- Direction
- did not influencee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cowpea genotypes (White and Butter)”
e1“Co-inoculation (Bradyrhizobium sp.+ Azospirillum brasilense) did not influence the production components of cowpea plants”
Claim · model-written summary
Inoculation with Bradyrhizobium sp. with 120 kg ha-1 of P2O5 phosphate fertilization was sufficient to promote maximum growth and development of cowpea.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- Inoculation with Bradyrhizobium sp. associated with phosphate fertilization of 120 kg ha-1 of P2O5e1
- Interactor
- Bradyrhizobium sp.Bradyrhizobiume1symbiont
- Outcome
- maximum growth and developmente1
- Direction
- promotee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cowpea genotypes (White and Butter)”
e1“Inoculation with Bradyrhizobium sp. associated with phosphate fertilization of 120 kg ha-1 of P2O5 was sufficient to promote maximum growth and development of cowpea plants”
Claim · model-written summary
The White cowpea genotype had higher nodulation capacity, dry matter production and grain yield.
- Taxon
- cowpeaVigna unguiculatae0
- Material
- Whitee1
- Outcome
- capacity of nodulation, dry matter production and grain yielde1
- Direction
- highere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cowpea genotypes (White and Butter)”
e1“The genotype White had higher capacity of nodulation, dry matter production and grain yield”
Claim · model-written summary
Inoculation with Bradyrhizobium sp. increased N and P contents in cowpea leaves.
- Taxon
- cowpeaVigna unguiculatae0
- Organ / stage
- leavese1
- Treatment
- Inoculation of Bradyrhizobium sp.e1
- Interactor
- Bradyrhizobium sp.Bradyrhizobiume1symbiont
- Outcome
- N and P contentse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cowpea genotypes (White and Butter)”
e1“Inoculation of Bradyrhizobium sp. increased N and P contents in the leaves”
Claim · model-written summary
The Butter cowpea genotype was superior to White in accumulation of P, K, Ca and Mg in leaves.
- Taxon
- cowpeaVigna unguiculatae0
- Material
- Buttere1
- Organ / stage
- leavese1
- Outcome
- accumulation of P, K, Ca and Mge1
- Direction
- superiore1
- Comparator
- Whitee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cowpea genotypes (White and Butter)”
e1“The genotype Butter was superior to the genotype White with respect to the accumulation of P, K, Ca and Mg in the leaves”
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See all 43 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.