Abstract
The interaction of cowpea with atmospheric N fixing bacteria can increase productivity and reduce production costs. In this study, it was evaluated in the field, the agronomic efficiency, through the accumulation of biomass of shoot, root, number and biomass of nodules, relative efficiency and productivity of three cultivars of cowpea (BRS New Era, BRS vibrant and Vinegar), in independent experiments, inoculated with five strains of rhizobia, BR 3302 (UFLA 3-84), BR 3301 (INPA 03-11B), BR 3262, BR 3299 and BR 3267, two controls, control and fertilized with nitrogen (50 kg of N ha-1) for each experiment, in blocks. For each cultivar the response of each strain inoculated varied within traits. However, strain BR 3302 showed a constant on the characteristics of biomass and productivity assessed, to cultivar Nova Era in Experiment 1, with values near the fertilized soil. For the cultivars Pujante and Vinagre, in experiments 2 and 3, respectively, were also observed satisfactory results with the inoculation of strain BR 3302, with productivity about 22 and 11% higher than the treatment fertilized with nitrogen in each experiment, however, did not differ on the other strains inoculated. The mean of three independent experiments, were observed grain yields of cowpea of 743 and 826 kg ha-1 for the treatments with nitrogen and the treatment inoculated with strain BR 3302, respectively. Thus, strain BR 3302 provided the best results for the three cultivars of cowpea.
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Claims 6
Claim · model-written summary
Strain BR 3302 gave biomass and productivity values for cultivar Nova Era near those of the fertilized soil in Experiment 1.
- Taxon
- cowpea
Vigna unguiculatae0 - Material
- Nova Erae1
- Treatment
- strain BR 3302e1
- Interactor
- BR 3302e1symbiont
- Outcome
- characteristics of biomass and productivitye1
- Direction
- neare1
- Comparator
- fertilized soile1
- Setting
- Experiment 1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interaction of cowpea with atmospheric N fixing bacteria can increase productivity and reduce production costs”
e1“strain BR 3302 showed a constant on the characteristics of biomass and productivity assessed, to cultivar Nova Era in Experiment 1, with values near the fertilized soil”
Claim · model-written summary
Inoculation with strain BR 3302 raised productivity of cultivar Pujante by about 22 percent over the nitrogen-fertilized treatment.
- Taxon
- cowpeaVigna unguiculatae0
- Material
- Pujantee2
- Treatment
- inoculation of strain BR 3302e2
- Interactor
- BR 3302e2symbiont
- Outcome
- productivitye2
- Direction
- highere2
- Value
- about 22e2
- Qualifier
- in experiments 2 and 3e2
- Comparator
- treatment fertilized with nitrogene2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interaction of cowpea with atmospheric N fixing bacteria can increase productivity and reduce production costs”
e2“For the cultivars Pujante and Vinagre, in experiments 2 and 3, respectively, were also observed satisfactory results with the inoculation of strain BR 3302, with productivity about 22 and 11% higher than the treatment fertilized with nitrogen in each experiment”
Claim · model-written summary
Inoculation with strain BR 3302 raised productivity of cultivar Vinagre by 11% over the nitrogen-fertilized treatment.
- Taxon
- cowpeaVigna unguiculatae0
- Material
- Vinagree2
- Treatment
- inoculation of strain BR 3302e2
- Interactor
- BR 3302e2symbiont
- Outcome
- productivitye2
- Direction
- highere2
- Value
- 11%e2
- Qualifier
- in experiments 2 and 3e2
- Comparator
- treatment fertilized with nitrogene2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interaction of cowpea with atmospheric N fixing bacteria can increase productivity and reduce production costs”
e2“For the cultivars Pujante and Vinagre, in experiments 2 and 3, respectively, were also observed satisfactory results with the inoculation of strain BR 3302, with productivity about 22 and 11% higher than the treatment fertilized with nitrogen in each experiment”
Claim · model-written summary
Mean grain yield of cowpea was 826 kg ha-1 with strain BR 3302 inoculation, versus the nitrogen-fertilized treatments.
- Taxon
- cowpeaVigna unguiculatae4
- Treatment
- inoculated with strain BR 3302e4
- Interactor
- BR 3302e4symbiont
- Outcome
- grain yieldse4
- Direction
- higherinferrede4
- Value
- 826 kg ha-1e4
- Qualifier
- The mean of three independent experimentse4
- Comparator
- treatments with nitrogene4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The mean of three independent experiments, were observed grain yields of cowpea of 743 and 826 kg ha-1 for the treatments with nitrogen and the treatment inoculated with strain BR 3302, respectively”
Claim · model-written summary
Strain BR 3302 gave the best results for all three cowpea cultivars, unlike the other strains inoculated.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- strain BR 3302e5
- Interactor
- BR 3302e5symbiont
- Outcome
- best resultse5
- Direction
- beste5
- Comparator
- the other strains inoculatede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interaction of cowpea with atmospheric N fixing bacteria can increase productivity and reduce production costs”
e3“did not differ on the other strains inoculated”
e5“Thus, strain BR 3302 provided the best results for the three cultivars of cowpea”
Claim · model-written summary
The response of each inoculated strain varied among traits within each cowpea cultivar.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- each strain inoculatede6
- Outcome
- traitse6
- Direction
- variede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interaction of cowpea with atmospheric N fixing bacteria can increase productivity and reduce production costs”
e6“For each cultivar the response of each strain inoculated varied within traits”
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See all 116 papers →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.