Bradyrhizobium · Yield · Glycine max (soybean)

Results differ36 papers: 32 positive, 4 negative or no effect · 4 pairs of papers confirmed to differ

51 claims from these papers; 1 citation between them.

Papers whose results differ, checked claim by claim 4

4 pairs of papers on this question report results that differ: an effect in one paper, the opposite effect or no effect in the other. Two model reviewers reading both claims accepted each pair.

Influence of Bradyrhizobium Inoculation and Fungicide Seed Treatment on Development and Yield of Cowpea, Lablab, and Soybean (2017)
no changeBradyrhizobium inoculation had no significant effect on soybean grain yield.
Bacillus suppresses nitrogen efficiency of soybean–rhizobium symbiosis through regulation of nitrogen‐related transcriptional and microbial patterns (2024)
increaseThe two Bradyrhizobium strains enhanced soybean yield.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Soybean yield response to Bradyrhizobium inoculation on southeastern coastal plain soils (2022)
no changeBradyrhizobium inoculum in any formulation did not significantly increase soybean yield relative to the untreated control at any site.
Soybean production in SEALBA: inoculation, co-inoculation, and starter nitrogen fertilization (2024)
increaseBradyrhizobium seed inoculation increased soybean grain yield in first-year cultivation areas.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Influence of Bradyrhizobium Inoculation and Fungicide Seed Treatment on Development and Yield of Cowpea, Lablab, and Soybean (2017)
no changeBradyrhizobium inoculation had no significant effect on soybean grain yield.
Soybean production in SEALBA: inoculation, co-inoculation, and starter nitrogen fertilization (2024)
increaseBradyrhizobium seed inoculation increased soybean grain yield in first-year cultivation areas.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
Soybean yield response to Bradyrhizobium inoculation on southeastern coastal plain soils (2022)
no changeBradyrhizobium inoculum in any formulation did not significantly increase soybean yield relative to the untreated control at any site.
Bacillus suppresses nitrogen efficiency of soybean–rhizobium symbiosis through regulation of nitrogen‐related transcriptional and microbial patterns (2024)
increaseThe two Bradyrhizobium strains enhanced soybean yield.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →

How these papers cite each other

1 citation between these papers: 1 on the same side, 0 across the two sides.

Positive result
Negative result or no effect
Citation, pointing to the cited paper
Citation across the two sides
Larger circle: more citations overall

Years run left to right. Citations come from the papers’ OpenAlex reference lists. Hover a paper to bring forward its citations; click it to open the paper.

Papers reporting a positive result 32

Nodulation, yield and quality of soybean as influenced by integrated nutrient management · 1970
- positive
  Integrated nutrient management significantly increased grains per pod.
- positive
  Integrated nutrient management significantly increased pods per plant.
- positive
  Integrated nutrient management significantly increased grain yield.
Improvement of Rhizobium Inoculants · 1989
- positive
  The inoculant increased soybean grain yield by an average 169-kg/ha in Mississippi delta field tests.
Effect of Seed Coating on Yield Attributes and Yield of Soybean (Glycine max L.) · 1992
- positive
  The combined coating increased grain yield by 37.2 per cent over uncoated soybean.
  compared with uncoated
EVALUATION OF NODULATING AND N2 FIXING CAPACITY OF SIX SOYBEAN (Glycine max (L) Merrill) CULTIVARS WITH AND WITHOUT INOCULATION WITH COWPEA Bradyrhizobium spp · 1999
- positive
  Inoculation increased nitrogen yield in most soybean cultivars.
Productivity, nutrient uptake, energy indices and profitability of soybean (Glycine max) as influenced by planting methods, Bradyrhizobium and plant growth promoting rhizobacteria · 2001
- positive
  Combined inoculation of Bradyrhizobium and PGPR recorded the highest gross returns, net returns and benefit:cost ratio.
cited by 1 paper here
Effect of application of biofertilizers to soybean (Glycine max) and nitrogen to tobacco (Nicotiuna tabacum) in soybean - tobacco cropping system · 2001
- positive
  Co-inoculation increased soybean growth, yield attributes and grain yield compared with individual or no inoculation.
  compared with their individual inoculation and no inoculation
Effect of application of biofertilizers to soybean (Glycine max) and nitrogen to tobacco (Nicotiana tabacum) in soybean – tobacco cropping system · 2007
- positive
  Co-inoculation of soybean with Bradyrhizobium and Pseudomonas significantly increased soybean growth, yield attributes and grain yield over single or no inoculation.
  compared with individual inoculation and no inoculation
Effects of different Bradyrhizobium strains and urea-N on the growth and yield of soybean · 2007
- positive
  Bradyrhizobium inoculation significantly increased grain and stover yield of soybean over control.
  compared with control
- positive
  Bradyrhizobium inoculation significantly increased pod and seed number per plant and 100-seed weight of soybean over control.
  compared with control
Dynamics of soil biological fertility as influenced by organic and inorganic inputs under soybean in vertisol. · 2012
- positive
  Seed inoculation with Bradyrhizobium and 100% RDF gave the highest soybean grain yield.
Effect of Microbial Fertilizers on Rhizospheric Bacterial Diversity and Yield Response of Soybean Plants · 2013
- positive
  Combined Bradyrhizobium and Bacillus application significantly increased soybean seed yield relative to other treatments.
  compared with other treatments
A Short Season Canadian Soybean Cultivar Double Cropped After Winter Wheat in Uzbekistan With and Without Inoculation with Bradyrhizobium · 2015
- positive
  Bradyrhizobium inoculation doubled soybean yield relative to the non-inoculated control (106% increase) in 2004.
  compared with non-inoculated control
Impact of the foraging activity of Apis mellifera adansonii Latreille (Hymenoptera: Apidae) and Bradyrhizobium fertilizer on pollination and yield components of Glycine max L. (Fabaceae) in the field · 2015
- positive
  Combined insect and Bradyrhizobium activity increased seeds per pod by 32.16%.
- positive
  Bradyrhizobium increased flower number, nodules, biomass, pod yield and seed yield.
Integrated Nutrient Management for Enhancing Productivity of Soybean · 2015
- positive
  The combined 75% recommended nitrogen dose, 25% nitrogen through vermicompost, and Bradyrhizobium seed treatment gave the highest soybean yield.
Effects of associated co-inoculation of Bradyrhizobium japonicum with Azospirillum brasilense on soybean yield and growth · 2017
- positive
  Co-inoculation of Bradyrhizobium spp. with Azospirillum brasilense is beneficial to soybean yield compared with single Bradyrhizobium inoculations.
  compared with single inoculations with Bradyrhizobium spp.
- positive
  The in-furrow application of Bradyrhizobium spp. with in-furrow Azospirillum spp. is the most beneficial method for soybean yield.
  compared with seed-applied
Organic Fertilizers and Biofertilizers to Improve Growth, Yield and Nutrient Quality of Soybean (Glycine max L.) · 2017
- positive
  T10 produced significantly high pod numbers and 100-seed dry weight.
Response of soybean to Rhizobium biofertilizer under different levels of phosphorus · 2018
- positive
  Bradyrhizobium inoculation with recommended N and P gave the highest soybean grain yield.
- positive
  The same combined treatment gave the highest soybean straw yield.
On-farm evaluation and determination of sources of variability of soybean response to Bradyrhizobium inoculation and phosphorus fertilizer in northern Ghana · 2018
- positive
  Combined P and Bradyrhizobium inoculant produced higher grain yield responses.
Inoculation of soybean seeds coated with osmoprotector in diferents soil pH's · 2018
- positive
  In cultivar NA 5909RG, Bradyrhizobium plus osmoprotector seeds sown seven days before sowing gave an 8.3% productivity increase over seeds without osmoprotector.
  compared with those without osmoprotector
- positive
  In cultivar NA 5909RG, Bradyrhizobium plus osmoprotector seeds sown four days before sowing gave a 10.8% productivity increase over seeds without osmoprotector.
  compared with those without osmoprotector
Growth, Yield and Seed Nutrient Quality of Soybean (Glycine max L.) as Affected by Organic, Biofertilizer and Synthetic Fertilizer Application · 2019
- positive
  T10 gave significantly high soybean number of pods.
- positive
  T10 gave significantly high soybean dry weight of 100 seeds.
Effect of soil applied organic amendments and microbial inoculant on the improvement of growth and yield of soybean (Glycine max L.) · 2020
- positive
  Wood biochar amendment together with Bradyrhizobium sp. inoculation significantly enhanced plant height and soybean yield compared with all other treatments.
  compared with all the other treatments
Isolation, Evaluation and Characterization of Phosphate Solubilizing Bacteria Associated with Soybean in Major Growing Agroecologies of Ethiopia Daniel Muleta1*, Maarten H Ryder2 and Matthew D Denton2 · 2021
- positive
  Inoculation with EPS1 (Pseudomonas fluorescens) plus Bradyrhizobium MAR 1495 increased soybean yield by 17.2% across six test locations.
- positive
  The EPS1 plus Bradyrhizobium inoculation gave a greater soybean yield than half the recommended inorganic P rate plus Bradyrhizobium, which gave an average 10.4% yield increase.
  compared with half of the recommended inorganic phosphorus fertilizer rate plus Bradyrhizobium, MAR 1495
Plant growth analysis describing the soybean plants response on dryland field to seed co-inoculation · 2021
- positive
  Adding microbes alongside Bradyrhizobium strains may increase soybean crop dry matter productivity.
Effect of Sulfur and Bradyrhizobium Inoculation on Nodulation and Yield of Soybean (Glycine max L.) on Nitisols of Southwestern Ethiopia · 2021
- positive
  Inoculation with Bradyrhizobium strain increased soybean grain and straw yield, alone or with sulfur.
THE INFLUENCE OF BACTERIAL INOCULATS ON PATHOGENS, YIELD AND QUALITY IN SOYBEAN CROP · 2021
- positive
  Bradyrhizobium plus Paenibacillus increased second-year soybean yield by 903 kg/ha or 39.8% versus control.
  compared with the control
Combination of Azospirillum and Bradyrhizobium on Inoculant Formulation Improve Nitrogen Biological Fixation in Soybean · 2022
- positive
  The mixed Bradyrhizobium and A. brasilense inoculant increased soybean productivity by 18% compared with mineral N fertilizer.
  compared with mineral N fertilizer
- positive
  The mixed Bradyrhizobium and A. brasilense inoculant increased soybean productivity by 7.4% compared with the standard liquid Bradyrhizobium inoculant.
  compared with standard liquid inoculant of Bradyrhizobium spp.
- positive
  The mixed Bradyrhizobium and A. brasilense inoculant increased soybean productivity by 28% compared with the control without nitrogen.
  compared with control without nitrogen
Influence of phosphorus and biofertilizers on symbiotic parameters, productivity and profitability of soybean (Glycine max) · 2023
- positive
  Bradyrhizobium plus PSB inoculation surpassed uninoculated control in growth, yield and monetary efficiency.
  compared with uninoculated control
cites 1 paper here
Benefits of soybean co-inoculation with Bradyrhizobium spp. and Azospirillum brasilense: Large-scale validation with farmers in Brazil · 2024
- positive
  Co-inoculation raised mean grain yield 8%, equivalent to 273 kg ha−1.
  compared with non-inoculated
- positive
  Co-inoculation raised soybean grain yield by up to 80%.
  compared with non-inoculated
Bacillus suppresses nitrogen efficiency of soybean–rhizobium symbiosis through regulation of nitrogen‐related transcriptional and microbial patterns · 2024
- positive
  The two Bradyrhizobium strains enhanced soybean yield.
Soybean production in SEALBA: inoculation, co-inoculation, and starter nitrogen fertilization · 2024
- positive
  Bradyrhizobium seed inoculation increased soybean grain yield in first-year cultivation areas.
Effects of integrated nutrient management on growth and yield of soybean · 2025
- positive
  T5 produced soybean seed yield of 2.54 t/ha.
- positive
  T5 produced soybean stover yield of 3.64 t/ha.
- positive
  T5 had the highest soybean harvest index at 41.08%.
- positive
  T5 produced soybean biological yield of 6.18 t/ha.
Chelated Forms of Trace Elements as a Promising Solution for Improving Soybean Symbiotic Capacity and Productivity Under Climate Change · 2025
- positive
  Bradyrhizobium inoculant with Fe or Ge chelates increased soybean grain productivity by 47.5 and 58%.
Enhancing biomass partitioning and yield traits in soybean (Glycine max L.) through Bradyrhizobium sp. and molybdenum fertilization · 2025
- positive
  Combined treatment gave highest soybean yield of 2.06 ton ha −1, significantly above control.
  compared with control

Papers reporting a negative result or no effect 4

INFLUENCE OF BRADYRHIZOBIUM AND TWO GLOMUS SPECIES ON THE GROWTH AND YIELD OF SOYBEAN · 2009
- negative
  Sole Bradyrhizobium inoculation had 37.5% lower grain yield.
  compared with AMF treatments and SSP
The effectiveness of different formulations of inoculants containing Bradyrhizobium on the soybean crop in Roraima. · 2010
- no effect
  Bradyrhizobium seed inoculation gave grain yield similar to mineral nitrogen fertilization at 200 kg ha-1 of N, independently of the inoculant carrier.
  compared with mineral nitrogen fertilization with 200 kg ha-1 of NNo difference from an alternative treatment
Influence of Bradyrhizobium Inoculation and Fungicide Seed Treatment on Development and Yield of Cowpea, Lablab, and Soybean · 2017
- no effect
  Bradyrhizobium inoculation had no significant effect on soybean grain yield.
  compared with a control
Soybean yield response to Bradyrhizobium inoculation on southeastern coastal plain soils · 2022
- no effect
  Bradyrhizobium inoculum in any formulation did not significantly increase soybean yield relative to the untreated control at any site.
  compared with untreated control

A paper is on the positive side when any of its claims here is positive. Claims are grouped by organism, treatment and what was measured or targeted. Claims that compare genotypes are left out; a claim about lacking a nutrient counts the other way round in that nutrient’s question. “Results differ” marks a question where two model reviewers, reading both claims, accepted at least one pair of papers whose results differ.

Bradyrhizobium · Yield · Glycine max (soybean)

Papers whose results differ, checked claim by claim 4

How these papers cite each other

Papers reporting a positive result 32

Papers reporting a negative result or no effect 4

Bradyrhizobium on Glycine max (soybean) against other targets

Bradyrhizobium · yield on other organisms