Abstract
Faba bean is the main source of protein and minerals for most of Ethiopia’s population. However, soil fertility challenges production, and good agricultural practices are needed to increase yield and nutritional value. Pot and field experiments were conducted to evaluate the effect of the sole and combined application of biostimulants on faba bean growth, yield, and seed nutrient content. Effects of sole and/or combined applications of plant growth-promoting rhizobacteria (PGPR) (Bacillus subtilis, Pseudomonas fluorescens, and Rhizobium leguminosarum) and moringa leaf extract (MLE) were pre-evaluated under greenhouse conditions. Subsequently, selected treatments from this pot experiment were further evaluated on a local and Moti faba bean variety under field conditions on Nitisol and Vertisol. The biostimulant treatments significantly improved faba bean growth under greenhouse conditions. However, they did not influence the crop’s growth, yield, and seed nutrient content under field conditions. Varieties significantly (p < 0.05) influenced yields and yield components obtained from Vertisol, as well as seed micronutrient contents from both soils. A local variety was found to have higher nutrient content. Meanwhile, grain yield had a positive correlation with seed iron (Fe) content and a negative correlation with seed selenium (Se) and phosphorus (P) contents. In addition, seed Se content strongly correlated with P content. From this study, it could be concluded that using biostimulants does not help in improving faba bean attributes under field conditions. However, further examination of a wider range of biostimulants under field conditions is required to uncover their realistic effectiveness for bean crop biofertilization.
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Claims 8
Claim · model-written summary
Biostimulants significantly improved faba bean growth under greenhouse conditions.
- Taxon
- faba bean
Vicia fabae0 - Treatment
- biostimulant treatmentse0
- Outcome
- faba bean growthe0
- Direction
- improvede0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biostimulant treatments significantly improved faba bean growth under greenhouse conditions”
Claim · model-written summary
Biostimulants did not influence faba bean growth, yield or seed nutrient content under field conditions.
- Taxon
- faba beanVicia fabae0
- Treatment
- biostimulant treatmentse0
- Outcome
- growth, yield, and seed nutrient contente1
- Direction
- did not influencee1
- Setting
- field conditionse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biostimulant treatments significantly improved faba bean growth under greenhouse conditions”
e1“they did not influence the crop's growth, yield, and seed nutrient content under field conditions”
Claim · model-written summary
Variety significantly influenced yields and yield components on Vertisol.
- Taxon
- faba beanVicia fabae0
- Material
- Varietiese2
- Outcome
- yields and yield componentse2
- Direction
- influencede2
- Qualifier
- p < 0.05e2
- Setting
- Vertisole2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biostimulant treatments significantly improved faba bean growth under greenhouse conditions”
e2“Varieties significantly (p < 0.05) influenced yields and yield components obtained from Vertisol, as well as seed micronutrient contents from both soils”
Claim · model-written summary
Variety significantly influenced seed micronutrient contents on both soils.
- Taxon
- faba beanVicia fabae0
- Material
- Varietiese2
- Outcome
- seed micronutrient contentse2
- Direction
- influencede2
- Qualifier
- p < 0.05e2
- Setting
- both soilse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biostimulant treatments significantly improved faba bean growth under greenhouse conditions”
e2“Varieties significantly (p < 0.05) influenced yields and yield components obtained from Vertisol, as well as seed micronutrient contents from both soils”
Claim · model-written summary
The local variety had higher nutrient content.
- Taxon
- faba beanVicia fabae0
- Material
- local varietye3
- Outcome
- nutrient contente3
- Direction
- highere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biostimulant treatments significantly improved faba bean growth under greenhouse conditions”
e3“A local variety was found to have higher nutrient content”
Claim · model-written summary
Grain yield was positively correlated with seed iron content.
- Taxon
- faba beanVicia fabae0
- Compound
- iron (Fe)e4
- Outcome
- grain yielde4
- Direction
- positive correlatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biostimulant treatments significantly improved faba bean growth under greenhouse conditions”
e4“grain yield had a positive correlation with seed iron (Fe) content and a negative correlation with seed selenium (Se) and phosphorus (P) contents”
Claim · model-written summary
Grain yield was negatively correlated with seed selenium and phosphorus contents.
- Taxon
- faba beanVicia fabae0
- Compound
- selenium (Se) and phosphorus (P)e4
- Outcome
- grain yielde4
- Direction
- negative correlatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biostimulant treatments significantly improved faba bean growth under greenhouse conditions”
e4“grain yield had a positive correlation with seed iron (Fe) content and a negative correlation with seed selenium (Se) and phosphorus (P) contents”
Claim · model-written summary
Seed selenium content was strongly correlated with phosphorus content.
- Taxon
- faba beanVicia fabae0
- Compound
- See5
- Outcome
- P contente5
- Direction
- strongly correlatede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biostimulant treatments significantly improved faba bean growth under greenhouse conditions”
e5“seed Se content strongly correlated with P content”
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