Abstract
Symbiosis of common bean with nitrogen-fixing bacteria can lead to a reduction in production costs and in environmental impacts.Considering the diversity of soils and climates, it is important to validate bacterial strains under different conditions to consolidate their recommendation as inoculants.Studies concerning the economic viability of Rhizobium inoculation in common bean are few, but they could assist in choosing the strain to be adopted.The aim of this study was to evaluate the performance of Rhizobium strains isolated from acid soils from the Amazon inoculated in seeds of the 'BRSMG Madrepérola' cultivar and to evaluate the economic viability of their use in the field.Four field experiments were conducted in the state of Minas Gerais, Brazil.A randomized block experimental design was used with four replications and seven treatments: inoculation with the strains CIAT 899 (Rhizobium tropici), UFLA 02-100 (R. etli), UFLA 02-68 (R. etli bv.mimosae), UFLA 02-127 (R. leguminosarum bv.phaseoli), and UFLA 04-173 (R. miluonense), plus two controls, one without inoculation + mineral nitrogen (N-urea) at a rate of 80 kg N ha -1 and another without inoculation and without mineral N. The strain CIAT 899 is already recommended for the manufacture of commercial inoculants, and the others, collected in the Amazon region, have proven to be highly effective in biological nitrogen fixation.Symbiosis of common bean with all the strains evaluated leads to satisfactory yields, with reduction in the application rate of mineral nitrogen and in environmental impacts and, consequently, reduction in economic costs, with higher profitability.
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Claims 5
Claim · model-written summary
Inoculation with the evaluated Rhizobium strains leads to satisfactory yields of common bean.
- Taxon
- common bean
Phaseolus vulgarise4 - Material
- BRSMG Madrepérolae1
- Treatment
- inoculation with the strainse3
- Interactor
- Rhizobium strainst0symbiont
- Outcome
- yieldse4
- Direction
- satisfactorye4
- Comparator
- without inoculation and without mineral Ne3
- Setting
- Minas Gerais, Brazile2
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Acid tolerant Rhizobium strains”
e1“The aim of this study was to evaluate the performance of Rhizobium strains isolated from acid soils from the Amazon inoculated in seeds of the 'BRSMG Madrepérola' cultivar and to evaluate the economic viability of their use in the field.”
e2“Four field experiments were conducted in the state of Minas Gerais, Brazil.”
e3“A randomized block experimental design was used with four replications and seven treatments: inoculation with the strains CIAT 899 (Rhizobium tropici), UFLA 02-100 (R. etli), UFLA 02-68 (R. etli bv.mimosae), UFLA 02-127 (R. leguminosarum bv.phaseoli), and UFLA 04-173 (R. miluonense), plus two controls, one without inoculation + mineral nitrogen (N-urea) at a rate of 80 kg N ha -1 and another without inoculation and without mineral N.”
e4“Symbiosis of common bean with all the strains evaluated leads to satisfactory yields, with reduction in the application rate of mineral nitrogen and in environmental impacts and, consequently, reduction in economic costs, with higher profitability.”
Claim · model-written summary
Symbiosis with the evaluated strains reduces the application rate of mineral nitrogen in common bean.
- Taxon
- common beanPhaseolus vulgarise4
- Treatment
- Symbiosis of common bean with all the strains evaluatede4
- Outcome
- application rate of mineral nitrogene4
- Direction
- reductione4
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Symbiosis of common bean with all the strains evaluated leads to satisfactory yields, with reduction in the application rate of mineral nitrogen and in environmental impacts and, consequently, reduction in economic costs, with higher profitability.”
Claim · model-written summary
Symbiosis with the evaluated strains reduces environmental impacts of common bean production.
- Taxon
- common beanPhaseolus vulgarise4
- Treatment
- Symbiosis of common bean with all the strains evaluatede4
- Outcome
- environmental impactse4
- Direction
- reductione4
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Symbiosis of common bean with all the strains evaluated leads to satisfactory yields, with reduction in the application rate of mineral nitrogen and in environmental impacts and, consequently, reduction in economic costs, with higher profitability.”
Claim · model-written summary
Symbiosis with the evaluated strains reduces economic costs of common bean production.
- Taxon
- common beanPhaseolus vulgarise4
- Treatment
- Symbiosis of common bean with all the strains evaluatede4
- Outcome
- economic costse4
- Direction
- reductione4
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Symbiosis of common bean with all the strains evaluated leads to satisfactory yields, with reduction in the application rate of mineral nitrogen and in environmental impacts and, consequently, reduction in economic costs, with higher profitability.”
Claim · model-written summary
Symbiosis with the evaluated strains gives higher profitability for common bean.
- Taxon
- common beanPhaseolus vulgarise4
- Treatment
- Symbiosis of common bean with all the strains evaluatede4
- Outcome
- profitabilitye4
- Direction
- highere4
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Symbiosis of common bean with all the strains evaluated leads to satisfactory yields, with reduction in the application rate of mineral nitrogen and in environmental impacts and, consequently, reduction in economic costs, with higher profitability.”
The same questions in other papers
inoculation · yield · Phaseolus vulgaris (common bean)Positive and negative results
152 papers in the same direction as this paper · 36 in the opposite direction · 6 reporting no difference from an alternative
- no effect
- positive
- positive
191 papers more in this group
See all 195 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.