Abstract
3 Abstract: A field experiment was conducted in 2005/2006 and 2006/2007 to evaluate the potential antagonistic activity of the cultural filtrates of the three wild rhizobial isolates M. L (R1), L. C (R2), T. S (R3), 41 R. leguminosarum ICARDA 441 (R4) strain and arbuscular mycorrhiza (AM) fungi in the biocontrol of damping- off and root rot diseases of faba bean plants, when applied in individual or combined treatments, under naturally infested soil with pathogenic fungi: Rhizoctonia solani, Fusarium spp. and F. solani. The bioassays of the rhizobia were tested. All treatments reduced the damping-off and infected plants as compared with untreated control. The combined treatment R2 + AM was the most effective treatment; it gave the lowest percentage of damping-off (6.67 and 8.89) and the highest percentage of healthy plants (86.58 and 83.33) in the two seasons, respectively. Beside the effect on disease control, seeds treatment with culture filtrates of the tested rhizobia or AM fungi in individual or combined treatments improved plant growth as indicated by the increased plant shoot height, root nodulation by native rhizobia, shoot dry weight and seeds yield of faba bean plants in the two trials, especially combined treatment R2 + AM. On the other hand the used rhizobia especially, isolate (L. C ), proved to be IAA, exopolysaccharides and chitinase producers. The soaking of faba bean seeds 4 in cultural filtrates of Rhizobium spp. individually or in combination with AM fungi acts as a bioprotection agents against faba bean plant root rot diseases, in addition to increasing plant growth and yield.
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Claims 6
Claim · model-written summary
All rhizobial culture filtrate and AM fungus treatments reduced damping-off and infected faba bean plants compared with untreated control under naturally infested soil.
- Taxon
- faba bean
Vicia fabae2 - Treatment
- culture filtrates of the tested rhizobia or AM fungie3
- Interactor
- Rhizoctonia solani
Rhizoctonia solanie2pathogen - Outcome
- damping-off and infected plantse1
- Direction
- reducede1
- Comparator
- untreated controle1
- Setting
- naturally infested soile2
FusariumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“All treatments reduced the damping-off and infected plants as compared with untreated control”
e2“damping- off and root rot diseases of faba bean plants, when applied in individual or combined treatments, under naturally infested soil with pathogenic fungi: Rhizoctonia solani, Fusarium spp. and F. solani”
e3“seeds treatment with culture filtrates of the tested rhizobia or AM fungi in individual or combined treatments”
Claim · model-written summary
The combined R2 + AM treatment gave the lowest damping-off percentage (6.67 and 8.89) in faba bean on naturally infested soil.
- Taxon
- faba beanVicia fabae2
- Treatment
- combined treatment R2 + AMe4
- Interactor
- Rhizoctonia solaniRhizoctonia solanie2pathogen
- Outcome
- percentage of damping-offe4
- Direction
- loweste4
- Value
- 6.67 and 8.89e4
- Setting
- naturally infested soile2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“damping- off and root rot diseases of faba bean plants, when applied in individual or combined treatments, under naturally infested soil with pathogenic fungi: Rhizoctonia solani, Fusarium spp. and F. solani”
e4“The combined treatment R2 + AM was the most effective treatment; it gave the lowest percentage of damping-off (6.67 and 8.89)”
Claim · model-written summary
The combined R2 + AM treatment gave the highest percentage of healthy faba bean plants (86.58 and 83.33).
- Taxon
- faba beanVicia fabae2
- Treatment
- combined treatment R2 + AMe6
- Interactor
- Rhizoctonia solaniRhizoctonia solanie2pathogen
- Outcome
- percentage of healthy plantse6
- Direction
- higheste6
- Value
- 86.58 and 83.33e6
- Setting
- naturally infested soile2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“damping- off and root rot diseases of faba bean plants, when applied in individual or combined treatments, under naturally infested soil with pathogenic fungi: Rhizoctonia solani, Fusarium spp. and F. solani”
e6“The combined treatment R2 + AM was the most effective treatment; it gave the lowest percentage of damping-off (6.67 and 8.89) and the highest percentage of healthy plants (86.58 and 83.33)”
Claim · model-written summary
Seed treatment with rhizobial or AM culture filtrates increased faba bean shoot height, root nodulation by native rhizobia and shoot dry weight.
- Taxon
- faba beanVicia fabae7
- Treatment
- culture filtrates of the tested rhizobia or AM fungie7
- Interactor
- native rhizobiae7symbiont
- Outcome
- plant shoot height, root nodulation by native rhizobia, shoot dry weighte7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“seeds treatment with culture filtrates of the tested rhizobia or AM fungi in individual or combined treatments improved plant growth as indicated by the increased plant shoot height, root nodulation by native rhizobia, shoot dry weight and seeds yield of faba bean plants”
Claim · model-written summary
Seed treatment with rhizobial or AM culture filtrates increased faba bean seed yield.
- Taxon
- faba beanVicia fabae7
- Treatment
- culture filtrates of the tested rhizobia or AM fungie7
- Outcome
- seeds yielde7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“seeds treatment with culture filtrates of the tested rhizobia or AM fungi in individual or combined treatments improved plant growth as indicated by the increased plant shoot height, root nodulation by native rhizobia, shoot dry weight and seeds yield of faba bean plants”
Claim · model-written summary
The rhizobial isolate L. C was an IAA, exopolysaccharide and chitinase producer.
- Taxon
- Faba BeanVicia fabat0
- Material
- L. Ce1
- Interactor
- rhizobiae1symbiont
- Outcome
- IAA, exopolysaccharides and chitinase producerse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Root Rot Fungal Diseases of Faba Bean”
e1“the used rhizobia especially, isolate (L. C ), proved to be IAA, exopolysaccharides and chitinase producers”
The same questions in other papers
mycorrhiza · yield · Vicia faba (faba bean)Results differ
12 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- no effect
12 papers more in this group
See all 16 papers →mycorrhiza · symbiosis · Vicia faba (faba bean)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 papers →mycorrhiza · Rhizoctonia solani · Vicia faba (faba bean)Results agree
1 paper in the same direction as this paper
- positive
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.