Abstract
The inoculation with Rhizobium together with nitrogen (N) fertilization during sowing can maximize common bean yield cultivated in the rainy season, but this interaction was not studied in the dry season cultivation. Therefore, the objective of this study was to evaluate the effects of biological nitrogen fixation (BNF) and or N fertilization on growth and yield of common bean cultivated in the dry season. Two experiments were conducted in a randomized block design with four replications. The first experiment, in 2013, had three treatments: F-25 (only fertilized with 20 kg of N ha-1 at sowing and with 40 kg of N ha-1 at 25 days after emergence - DAE), I-25 (only inoculated with Rhizobium tropici at sowing and fertilized with 40 kg N ha-1 at 25 DAE) and IF-25 (inoculated with R. tropici and fertilized with 20 kg N ha-1 at sowing and with 40 kg N ha‑1 at 25 DAE). The second experiment, in 2014, had the same three treatments and an additional treatment I (inoculated with R. tropici with no N fertilization). Three plants were collected randomly weekly, for growth analysis, which showed the highest biomass and leaf area accumulation and, consequently, highest grain yield of common bean in the treatment IF-25. The results indicated that in the dry season, the inoculation with Rhizobium tropici might replace the N fertilization (20 kg ha-1) at sowing without yield loss for common bean cultivation in a low-cost agriculture. Nevertheless, the N fertilization (20 kg ha-1) together with inoculation with Rhizobium tropici at sowing did not inhibit root nodulation, increasing growth and yield of common bean for a high-cost agriculture. However, more studies are required with other cultivars and sites, to recommend these agronomic practices in the cultivation of common bean in the dry season. Key words: Inoculation, fertilization, Rhizobium, Phaseolus vulgaris, growth.
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Claims 5
Claim · model-written summary
The IF-25 treatment produced the highest biomass and leaf area accumulation.
- Taxon
- common bean
Phaseolus vulgarise0 - Treatment
- IF-25e0
- Outcome
- biomass and leaf area accumulatione0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest biomass and leaf area accumulation and, consequently, highest grain yield of common bean in the treatment IF-25”
Claim · model-written summary
The IF-25 treatment produced the highest common bean grain yield.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- IF-25e0
- Outcome
- grain yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest biomass and leaf area accumulation and, consequently, highest grain yield of common bean in the treatment IF-25”
Claim · model-written summary
Rhizobium tropici inoculation might replace 20 kg ha-1 nitrogen at sowing without yield loss in dry-season common bean.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- inoculation with Rhizobium tropicie0
- Interactor
- Rhizobium tropici
Martinezella tropicie0symbiont - Outcome
- yielde0
- Direction
- without yield losse0
- Comparator
- N fertilization (20 kg ha-1) at sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the dry season, the inoculation with Rhizobium tropici might replace the N fertilization (20 kg ha-1) at sowing without yield loss for common bean cultivation”
Claim · model-written summary
Sowing nitrogen together with Rhizobium tropici inoculation did not inhibit root nodulation.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- N fertilization (20 kg ha-1) together with inoculation with Rhizobium tropici at sowinge0
- Interactor
- Rhizobium tropiciMartinezella tropicie0symbiont
- Outcome
- root nodulatione0
- Direction
- did not inhibite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the N fertilization (20 kg ha-1) together with inoculation with Rhizobium tropici at sowing did not inhibit root nodulation”
t0“common bean”
Claim · model-written summary
Nitrogen fertilization with Rhizobium tropici inoculation increased common bean growth and yield.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- N fertilization (20 kg ha-1) together with inoculation with Rhizobium tropici at sowinge0
- Interactor
- Rhizobium tropiciMartinezella tropicie0symbiont
- Outcome
- growth and yielde0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the N fertilization (20 kg ha-1) together with inoculation with Rhizobium tropici at sowing did not inhibit root nodulation, increasing growth and yield of common bean”
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