Abstract
This work aimed to evaluate the use of phosphorus (P) fertilizer, rhizobia inoculation, and seed enrichment with molybdenum (Mo) as tools for enhancing the cowpea yield in the Brazilian eastern Amazon. A set of field and greenhouse experiments were carried out in cerrado and upland forest environments. Four levels of P fertilization, eight rhizobia strains, and the application of mineral nitrogen (N) were evaluated for the cultivar BRS Tumucumaque (BR = Brasil e S = Sementes), and two levels of Mo seed enrichment were assessed for the cultivars BRS Tumucumaque and BRS Guariba. Grain yield increased linearly with the level of P applied. Inoculation with the rhizobia strain BR 3267 increased the shoot and nodule mass of the cultivar BRS Tumucumaque. There was no difference in grain yield and grain N accumulation between inoculation with seven rhizobia strains, N mineral fertilization and the control (without inoculation and N fertilization) in cerrado and upland forest environments. Cowpea grain yield and grain N accumulation were higher in the cerrado than in the upland forest environment and when the seeds were enriched with Mo. Phosphorus fertilization and seed enrichment with Mo are efficient tools to enhance cowpea yield in the Brazilian Amazon.
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Claims 7
Claim · model-written summary
Cowpea grain yield increased linearly with applied phosphorus level.
- Taxon
- Cowpea
Vigna unguiculatat0 - Treatment
- P appliede0
- Outcome
- Grain yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield increased linearly with the level of P applied.”
t0“Cowpea”
Claim · model-written summary
BR 3267 rhizobia inoculation increased BRS Tumucumaque shoot and nodule mass.
- Taxon
- CowpeaVigna unguiculatat0
- Material
- BRS Tumucumaquee0
- Treatment
- Inoculation with the rhizobia strain BR 3267e0
- Interactor
- rhizobia strain BR 3267e0symbiont
- Outcome
- shoot and nodule masse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with the rhizobia strain BR 3267 increased the shoot and nodule mass of the cultivar BRS Tumucumaque.”
t0“Cowpea”
Claim · model-written summary
Grain yield did not differ among seven rhizobia inoculations, mineral nitrogen fertilization and controls.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- inoculation with seven rhizobia strains, N mineral fertilizatione0
- Interactor
- rhizobia strainse0symbiont
- Outcome
- grain yielde0
- Direction
- no differencee0
- Comparator
- the control (without inoculation and N fertilization)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no difference in grain yield and grain N accumulation between inoculation with seven rhizobia strains, N mineral fertilization and the control (without inoculation and N fertilization) in cerrado and upland forest environments.”
t0“Cowpea”
Claim · model-written summary
Grain nitrogen accumulation did not differ among seven rhizobia inoculations, mineral nitrogen fertilization and controls.
- Taxon
- CowpeaVigna unguiculatat0
- Treatment
- inoculation with seven rhizobia strains, N mineral fertilizatione0
- Interactor
- rhizobia strainse0symbiont
- Outcome
- grain N accumulatione0
- Direction
- no differencee0
- Comparator
- the control (without inoculation and N fertilization)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no difference in grain yield and grain N accumulation between inoculation with seven rhizobia strains, N mineral fertilization and the control (without inoculation and N fertilization) in cerrado and upland forest environments.”
t0“Cowpea”
Claim · model-written summary
Cowpea grain yield and grain nitrogen accumulation were higher in cerrado than upland forest environments.
- Taxon
- CowpeaVigna unguiculatae0
- Outcome
- grain yield and grain N accumulatione0
- Direction
- highere0
- Comparator
- upland forest environmente0
- Setting
- cerradoe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea grain yield and grain N accumulation were higher in the cerrado than in the upland forest environment”
Claim · model-written summary
Molybdenum seed enrichment raised cowpea grain yield and grain nitrogen accumulation.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- seeds were enriched with Moe0
- Outcome
- grain yield and grain N accumulatione0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea grain yield and grain N accumulation were higher in the cerrado than in the upland forest environment and when the seeds were enriched with Mo.”
Claim · model-written summary
The authors concluded that phosphorus fertilization and molybdenum seed enrichment efficiently enhance cowpea yield in the Brazilian Amazon.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- Phosphorus fertilization and seed enrichment with Moe0
- Outcome
- enhance cowpea yielde0
- Setting
- Brazilian Amazone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus fertilization and seed enrichment with Mo are efficient tools to enhance cowpea yield in the Brazilian Amazon.”
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