Abstract
ABSTRACT Soil fertility depletion is a major constraint in the North Gondar highlands of Ethiopia leading to the reduction of faba bean yields. Limited access organic fertilizer and heavy reliance on mineral fertilizers have degraded soil quality and crop productivity. This study investigated the effects of biochar and rhizobium inoculation on nodulation, yield of faba bean ( Vicia faba L.), and selected soil properties in Dabat district, North Gondar. A total of six treatments were made from the factorial combination of three biochar levels (0, 5, and 10 tons ha −1 ) and two inoculation levels (inoculated and uninoculated) in a Randomized Complete Block Design (RCBD) with three replications. Soil samples were collected from a depth of 30 cm to determine soil properties. The effective nodule number was assessed by counting nodules per plant. Biochar application and rhizobium inoculation had a significant effect ( p < 0.05) on selected soil properties, nodulation, and grain yield of faba bean. The highest soil pH (6.66), organic carbon content (2.28%), total nitrogen (0.26%), available phosphorus (51.61 ppm), effective nodule number per plant (197.65), and yield (2617.76 kg ha −1 ) were recorded following the application of 10 tons ha −1 of biochar combined with Rhizobium inoculation. Furthermore, this synergistic approach a significantly improved faba bean nodulation by 134.9% and grain yield by 74.39% compared to the control. The application of biochar combined with rhizobium inoculation significantly improved soil nutrient levels and faba bean yields. Future research should investigate the effects of varying biochar application rates on the yields of other crops.
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Claims 8
Claim · model-written summary
Combined 10 tons ha −1 biochar and Rhizobium inoculation gave the highest soil pH, 6.66.
- Taxon
- faba bean
Vicia fabae1 - Treatment
- 10 tons ha −1 of biochar combined with Rhizobium inoculatione0
- Outcome
- soil pHe0
- Direction
- higheste0
- Value
- 6.66e0
RhizobiumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest soil pH (6.66), organic carbon content (2.28%), total nitrogen (0.26%), available phosphorus (51.61 ppm), effective nodule number per plant (197.65), and yield (2617.76 kg ha −1 ) were recorded following the application of 10 tons ha −1 of biochar combined with Rhizobium inoculation.”
e1“Biochar application and rhizobium inoculation had a significant effect ( p < 0.05) on selected soil properties, nodulation, and grain yield of faba bean.”
Claim · model-written summary
The combined treatment gave the highest soil organic carbon content, 2.28%.
- Taxon
- faba beanVicia fabae1
- Treatment
- 10 tons ha −1 of biochar combined with Rhizobium inoculatione0
- Outcome
- organic carbon contente0
- Direction
- higheste0
- Value
- 2.28%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest soil pH (6.66), organic carbon content (2.28%), total nitrogen (0.26%), available phosphorus (51.61 ppm), effective nodule number per plant (197.65), and yield (2617.76 kg ha −1 ) were recorded following the application of 10 tons ha −1 of biochar combined with Rhizobium inoculation.”
e1“grain yield of faba bean”
Claim · model-written summary
The combined treatment gave the highest soil total nitrogen, 0.26%.
- Taxon
- faba beanVicia fabae1
- Treatment
- 10 tons ha −1 of biochar combined with Rhizobium inoculatione0
- Outcome
- total nitrogene0
- Direction
- higheste0
- Value
- 0.26%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest soil pH (6.66), organic carbon content (2.28%), total nitrogen (0.26%), available phosphorus (51.61 ppm), effective nodule number per plant (197.65), and yield (2617.76 kg ha −1 ) were recorded following the application of 10 tons ha −1 of biochar combined with Rhizobium inoculation.”
e1“grain yield of faba bean”
Claim · model-written summary
The combined treatment gave the highest available phosphorus, 51.61 ppm.
- Taxon
- faba beanVicia fabae1
- Treatment
- 10 tons ha −1 of biochar combined with Rhizobium inoculatione0
- Outcome
- available phosphoruse0
- Direction
- higheste0
- Value
- 51.61 ppme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest soil pH (6.66), organic carbon content (2.28%), total nitrogen (0.26%), available phosphorus (51.61 ppm), effective nodule number per plant (197.65), and yield (2617.76 kg ha −1 ) were recorded following the application of 10 tons ha −1 of biochar combined with Rhizobium inoculation.”
e1“grain yield of faba bean”
Claim · model-written summary
The combined treatment gave the highest effective nodule number per plant, 197.65.
- Taxon
- faba beanVicia fabae1
- Treatment
- 10 tons ha −1 of biochar combined with Rhizobium inoculatione0
- Outcome
- effective nodule number per plante0
- Direction
- higheste0
- Value
- 197.65e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest soil pH (6.66), organic carbon content (2.28%), total nitrogen (0.26%), available phosphorus (51.61 ppm), effective nodule number per plant (197.65), and yield (2617.76 kg ha −1 ) were recorded following the application of 10 tons ha −1 of biochar combined with Rhizobium inoculation.”
e1“grain yield of faba bean”
Claim · model-written summary
The combined treatment gave the highest yield, 2617.76 kg ha −1.
- Taxon
- faba beanVicia fabae1
- Treatment
- 10 tons ha −1 of biochar combined with Rhizobium inoculatione0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 2617.76 kg ha −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest soil pH (6.66), organic carbon content (2.28%), total nitrogen (0.26%), available phosphorus (51.61 ppm), effective nodule number per plant (197.65), and yield (2617.76 kg ha −1 ) were recorded following the application of 10 tons ha −1 of biochar combined with Rhizobium inoculation.”
e1“grain yield of faba bean”
Claim · model-written summary
Combined biochar and Rhizobium inoculation improved faba bean nodulation by 134.9% versus control.
- Taxon
- faba beanVicia fabae0
- Treatment
- biochar combined with rhizobium inoculatione1
- Outcome
- nodulatione0
- Direction
- improvede0
- Value
- 134.9%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this synergistic approach a significantly improved faba bean nodulation by 134.9% and grain yield by 74.39% compared to the control.”
e1“biochar combined with rhizobium inoculation”
Claim · model-written summary
Combined biochar and Rhizobium inoculation improved grain yield by 74.39% versus control.
- Taxon
- faba beanVicia fabae0
- Treatment
- biochar combined with rhizobium inoculatione1
- Outcome
- grain yielde0
- Direction
- improvede0
- Value
- 74.39%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this synergistic approach a significantly improved faba bean nodulation by 134.9% and grain yield by 74.39% compared to the control.”
e1“biochar combined with rhizobium inoculation”
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See all 15 papers →8 of 14 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.