The combined treatment gave the highest effective nodule number per plant, 197.65.

Rhizobium · symbiosis · Vicia faba (faba bean)Results agree

18 papers in the same direction as this claim

1. positive
   Rhizobium inoculation increased nodule count by 39.7%.

   Agronomic Performances of Faba Bean ( Vicia faba L.) Varieties to Rhizobial Inoculation, Biochar and Lime Applications Under Acidic Soil Conditions in Ethiopia · 2025

   Same directionCited by this paper

2. positive
   Rhizobium strains significantly enhanced nodulation, nitrogen fixation and nutrient uptake.

   Legume-Rhizobium Strain Specificity Enhances Nutrition and Nitrogen Fixation in Faba Bean (Vicia faba L.) · 2020 · compared with Non-inoculated plants

   Same direction

3. positive
   Inoculation with Rhizobium MAP7, Brevibacillus MAP4 and Pseudomonas MAP5 increased nodule number in Vicia faba four times relative to the control.

   Insights in nodule-inhabiting plant growth promoting bacteria and their ability to stimulate Vicia faba growth · 2022 · compared with control

   Same direction

4. positive
   Co-inoculation with TAL−1148 and B. subtilis was more effective for plant growth parameters under 600 mg kg−1 Ni than other treatments in the first season; the pattern recurred in the second.

   Synergistic Interaction between Symbiotic N2 Fixing Bacteria and Bacillus strains to Improve Growth, Physiological Parameters, Antioxidant Enzymes and Ni Accumulation in Faba Bean Plants (Vicia faba) under Nickel Stress · 2022 · compared with the other treatments

   Same direction

5. positive
   Co-inoculation increased nodulation under water deficit.

   Co-Inoculation of Rhizobium and Azotobacter on Growth of Faba bean under Water Deficit Conditions · 2011

   Same direction

6. positive
   T. harzianum with Rhizobium gave the best faba bean number, dry weight of nodules in both soil conditions.

   SYMBIOTIC NITROGEN FIXATION PROCESS IN FABA BEAN AND CHICKPEA AS AFFECTED BY BIOLOGICAL AND CHEMICAL CONTROL OF ROOT-ROT · 2006 · compared with different biocontrol agents

   Same direction

7. positive
   Rhizobium inoculation significantly increased shoot and nodule dry weight, shoot nitrogen, and yield.

   Effects of Rhizobium Inoculation and Urea Fertilization on Faba Bean (Vicia faba L.) Production in a Semi-Desert Zone · 2012

   Same direction

8. positive
   Rhizobium addition enhanced nodulation and nitrogen fixation.

   Amelioration of NaCl stress on germination, growth, and nitrogen fixation of Vicia faba at isosmotic Na–Ca combinations and Rhizobium · 2024

   Same direction

10 papers more in this group

inoculation · symbiosis · Vicia faba (faba bean)Results differ

40 papers in the same direction as this claim · 8 in the opposite direction

1. positive
   Rhizobium inoculation increased nodule count by 39.7%.

   Agronomic Performances of Faba Bean ( Vicia faba L.) Varieties to Rhizobial Inoculation, Biochar and Lime Applications Under Acidic Soil Conditions in Ethiopia · 2025

   Same directionCited by this paper

2. no effect
   No inoculation treatment increased biological nitrogen fixation over non-inoculation.

   Inoculation with Different Nitrogen-Fixing Bacteria and Arbuscular Mycorrhiza Affects Grain Protein Content and Nodule Bacterial Communities of a Fava Bean Crop · 2020 · compared with non-inoculated level

   Opposite direction

3. negative
   Without field inoculum, nodulation was spotty relative to inoculated fields.

   PRELIMINARY ASSESSMENT OF SMALL FABA BEANS GROWN IN MANITOBA · 1975 · compared with fields where inoculum was applied

   Opposite direction

4. negative
   Favoring pea inoculum significantly decreased acetylene reduction in fababeans.

   INOCULUM SPECIFICITY IN FABABEANS AND PEAS · 1979

   Opposite direction

5. no effect
   Different inocula did not significantly differ for shoot and root length and nodule N.

   Xylem-mediated channeling of nitrogen in broad bean (Vicia faba) · 2014

   Opposite direction

6. negative
   Inoculation with M. phaseolina significantly reduced root nodulation of faba bean by 15-20% relative to control under pot conditions.

   Soil application of different species of Trichoderma for the management of charcoal rot of faba bean caused by Macrophomina phaseolina · 2017 · compared with control

   Opposite direction

7. negative
   Virus inoculation greatly reduced nodulation in Giza 402 broad bean.

   Identification and detectability of broad bean stain virus in broad bean seeds and effects on nodulation · 2011

   Opposite direction

8. no effect
   Inoculation had no significant effect on nodulation, grain yield or seed weight of faba bean in any site-year.

   Contrasting Rhizobium inoculation requirements of zero-tannin faba bean and narrow-leafed lupin in western Canada · 2014 · compared with Un-inoculated

   Opposite direction

40 papers more in this group

biochar · symbiosis · Vicia faba (faba bean)Results agree

5 papers in the same direction as this claim

1. positive
   Biochar with microelements significantly increased nodulation activities and number.

   Interactive effects of biochar and micronutrients on faba bean growth, symbiotic performance, and soil properties · 2017

   Same directionCited by this paper

2. positive
   Recommended biochar rate increased nodule count by 49.4%.

   Agronomic Performances of Faba Bean ( Vicia faba L.) Varieties to Rhizobial Inoculation, Biochar and Lime Applications Under Acidic Soil Conditions in Ethiopia · 2025

   Same directionCited by this paper

3. positive
   Biochar amendment improved faba bean nodulation.

   Response of Cellulose Decomposition and Nodulation in Soils Amended with Biochar for Peri-Urban Agriculture · 2023

   Same direction

4. positive
   Biochar-amended soil gave the highest faba bean nodulation number and root and shoot biomass.

   Response of Coffee Husk Biochar on Growth of Faba Bean on Nitisol and Soil Nutrients · 2021

   Same direction

5. positive
   WV + RHB increased nodulation above the control in faba bean

   Enhancing faba bean (Vicia faba L.) productivity and improving soil fertility using organic amendments in alkaline soil · 2026 · compared with control

   Same direction