Abstract
Abstract Leguminous crops are significantly involved in the global symbiotic biological N 2 Fixation (BNF), an eco‐friendly process in the agriculture system. Biochar is considered as a vital amendment in improving growth and quality of crops and soils. Few investigations have been conducted to determine the combination effect of biochar with microelements on growth of legumes and soil properties. This study was designed to study the effect of soybean straw‐derived biochar (SSDB) with or without microelements on soil microbial and chemical properties, growth, yield, and seed chemical composition of faba bean ( Vicia faba L.). Results revealed that dehydrogenase (DHA) and phosphatase (P‐ase) activities were markedly improved with the increase of SSDB rates under addition of microelements and their highest values were recorded after 90 d. Significant increases were noticed in nodulation activities, nodulation numbers (30.1–72.8), concentrations of N (1.62–1.93%), P (0.15–0.21%), and K (0.53–0.67%), and seed chemical constituents due to the addition of SSDB in the presence of microelements. Moreover, the combination of biochar with microelements caused significant changes in microbial counts. Overall, this investigation shows the potential and role of SSDB in enhancing the growth quality of faba bean seeds as well as an improvement of soil characteristics.
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Claims 8
Claim · model-written summary
Soil dehydrogenase and phosphatase activities rose with biochar rate under microelements and peaked after 90 days.
- Taxon
- Vicia faba L.
Vicia fabae0 - Treatment
- SSDB rates under addition of microelementse1
- Outcome
- dehydrogenase (DHA) and phosphatase (P‐ase) activitiese1
- Direction
- improvede1
- Value
- 90 de1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean ( Vicia faba L.)”
e1“dehydrogenase (DHA) and phosphatase (P‐ase) activities were markedly improved with the increase of SSDB rates under addition of microelements and their highest values were recorded after 90 d”
Claim · model-written summary
Biochar with microelements significantly increased nodulation activities and number.
- Taxon
- Vicia faba L.
Vicia fabae0 - Treatment
- addition of SSDB in the presence of microelementse1
- Outcome
- nodulation activitiese1
- Direction
- increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean ( Vicia faba L.)”
e1“Significant increases were noticed in nodulation activities, nodulation numbers (30.1–72.8), concentrations of N (1.62–1.93%), P (0.15–0.21%), and K (0.53–0.67%), and seed chemical constituents due to the addition of SSDB in the presence of microelements”
Claim · model-written summary
Biochar with microelements significantly increased nodulation numbers to 30.1–72.8.
- Taxon
- Vicia faba L.
Vicia fabae0 - Treatment
- addition of SSDB in the presence of microelementse1
- Outcome
- nodulation numberse1
- Direction
- increasese1
- Value
- 30.1–72.8e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean ( Vicia faba L.)”
e1“Significant increases were noticed in nodulation activities, nodulation numbers (30.1–72.8), concentrations of N (1.62–1.93%), P (0.15–0.21%), and K (0.53–0.67%), and seed chemical constituents due to the addition of SSDB in the presence of microelements”
Claim · model-written summary
Biochar with microelements significantly increased N concentration to 1.62–1.93%.
- Taxon
- Vicia faba L.
Vicia fabae0 - Treatment
- addition of SSDB in the presence of microelementse1
- Outcome
- concentrations of Ne1
- Direction
- increasese1
- Value
- 1.62–1.93%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean ( Vicia faba L.)”
e1“Significant increases were noticed in nodulation activities, nodulation numbers (30.1–72.8), concentrations of N (1.62–1.93%), P (0.15–0.21%), and K (0.53–0.67%), and seed chemical constituents due to the addition of SSDB in the presence of microelements”
Claim · model-written summary
Biochar with microelements significantly increased P concentration to 0.15–0.21%.
- Taxon
- Vicia faba L.
Vicia fabae0 - Treatment
- addition of SSDB in the presence of microelementse1
- Outcome
- Pe1
- Direction
- increasese1
- Value
- 0.15–0.21%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean ( Vicia faba L.)”
e1“Significant increases were noticed in nodulation activities, nodulation numbers (30.1–72.8), concentrations of N (1.62–1.93%), P (0.15–0.21%), and K (0.53–0.67%), and seed chemical constituents due to the addition of SSDB in the presence of microelements”
Claim · model-written summary
Biochar with microelements significantly increased K concentration to 0.53–0.67%.
- Taxon
- Vicia faba L.
Vicia fabae0 - Treatment
- addition of SSDB in the presence of microelementse1
- Outcome
- Ke1
- Direction
- increasese1
- Value
- 0.53–0.67%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean ( Vicia faba L.)”
e1“Significant increases were noticed in nodulation activities, nodulation numbers (30.1–72.8), concentrations of N (1.62–1.93%), P (0.15–0.21%), and K (0.53–0.67%), and seed chemical constituents due to the addition of SSDB in the presence of microelements”
Claim · model-written summary
Biochar with microelements significantly increased seed chemical constituents.
- Taxon
- Vicia faba L.
Vicia fabae0 - Treatment
- addition of SSDB in the presence of microelementse1
- Outcome
- seed chemical constituentse1
- Direction
- increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean ( Vicia faba L.)”
e1“Significant increases were noticed in nodulation activities, nodulation numbers (30.1–72.8), concentrations of N (1.62–1.93%), P (0.15–0.21%), and K (0.53–0.67%), and seed chemical constituents due to the addition of SSDB in the presence of microelements”
Claim · model-written summary
Biochar combined with microelements significantly changed microbial counts.
- Taxon
- Vicia faba L.
Vicia fabae0 - Treatment
- combination of biochar with microelementse1
- Outcome
- microbial countse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“faba bean ( Vicia faba L.)”
e1“the combination of biochar with microelements caused significant changes in microbial counts”
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See all 10 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.