Abstract
Several pathogens attack Egyptian onion crop causes many looses in yield, one of those important causal pathogens is Botrytis allii the causal pathogen of umbel Head blight disease. B.allii was isolated from infected onion plants grown in an open field in Assiut Governorate, Egypt. All the tested isolates infected onion plants with different degrees of disease severity. The antagonistic efficiency of Trichoderma spp evaluated in in vitro study. All Trichoderma spp. suppressed the growth of B..allii with different degree. Results of antagonistic capability showed that Trichoderma viride caused the highest reduction of the growth compared to other species, 86%, 84% and 85% for T. viride and T. harzianum respectively. Under greenhouse conditions the confrontation of T. viride affected on the causal pathogen growth with different rates decreased the disease severity around 45% in 2010 season and around 30% during 2011 season. Results can be suggested that use of T. viride as biocontrol agents under greenhouse condition but these results need to confirm by field study.
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Claims 7
Claim · model-written summary
B. allii was isolated from infected onion plants in an Assiut field.
- Taxon
- onion
Allium cepae0 - Interactor
- B.allii
Botrytis alliie0pathogen - Outcome
- B.allii was isolatede0
- Setting
- Assiut Governorate, Egypte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B.allii was isolated from infected onion plants grown in an open field in Assiut Governorate, Egypt.”
Claim · model-written summary
All tested B. allii isolates infected onion plants, with differing disease severity.
- Taxon
- onionAllium cepae0
- Interactor
- B.alliiBotrytis alliie1pathogen
- Outcome
- different degrees of disease severitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the tested isolates infected onion plants with different degrees of disease severity.”
e1“B.allii was isolated from infected onion plants”
Claim · model-written summary
All tested Trichoderma species suppressed B. allii growth in vitro to differing degrees.
- Taxon
- onionAllium cepae1
- Treatment
- Trichoderma spp.e0
- Interactor
- B..alliie0pathogen
- Second interactor
- Trichoderma spp.
Trichodermae0biocontrol_agent - Outcome
- growth of B..alliie0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All Trichoderma spp. suppressed the growth of B..allii with different degree.”
e1“B.allii was isolated from infected onion plants”
Claim · model-written summary
T. viride caused the highest reduction of B. allii growth relative to other species.
- Taxon
- onionAllium cepat0
- Treatment
- Trichoderma viridee0
- Interactor
- Botrytis alliiBotrytis alliit0pathogen
- Second interactor
- Trichoderma viride
Trichoderma viridee0biocontrol_agent - Outcome
- growthe0
- Direction
- highest reductione0
- Qualifier
- 86%, 84% and 85%e0
- Comparator
- other speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Schema note from the model: Reported three percentages cannot be assigned unambiguously to the two named species.
Verbatim
e0“Trichoderma viride caused the highest reduction of the growth compared to other species, 86%, 84% and 85% for T. viride and T. harzianum respectively.”
t0“Botrytis allii by Trichoderma viride on onion”
Claim · model-written summary
Greenhouse T. viride treatment decreased onion disease severity around 45% in 2010.
- Taxon
- onionAllium cepat0
- Treatment
- T. viridee0
- Interactor
- Botrytis alliiBotrytis alliit0pathogen
- Second interactor
- T. virideTrichoderma viridee0biocontrol_agent
- Outcome
- disease severitye0
- Direction
- decreasede0
- Value
- around 45%e0
- Qualifier
- 2010 seasone0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under greenhouse conditions the confrontation of T. viride affected on the causal pathogen growth with different rates decreased the disease severity around 45% in 2010 season and around 30% during 2011 season.”
t0“Botrytis allii by Trichoderma viride on onion”
Claim · model-written summary
Greenhouse T. viride treatment decreased onion disease severity around 30% in 2011.
- Taxon
- onionAllium cepat0
- Treatment
- T. viridee0
- Interactor
- Botrytis alliiBotrytis alliit0pathogen
- Second interactor
- T. virideTrichoderma viridee0biocontrol_agent
- Outcome
- disease severitye0
- Direction
- decreasede0
- Value
- around 30%e0
- Qualifier
- 2011 seasone0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under greenhouse conditions the confrontation of T. viride affected on the causal pathogen growth with different rates decreased the disease severity around 45% in 2010 season and around 30% during 2011 season.”
t0“Botrytis allii by Trichoderma viride on onion”
Claim · model-written summary
Authors suggested T. viride greenhouse biocontrol, pending field confirmation.
- Taxon
- onionAllium cepat0
- Interactor
- T. virideTrichoderma viridee0biocontrol_agent
- Outcome
- use of T. viride as biocontrol agents under greenhouse conditione0
- Qualifier
- need to confirm by field studye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results can be suggested that use of T. viride as biocontrol agents under greenhouse condition but these results need to confirm by field study.”
t0“onion”
The same questions in other papers
Trichoderma · growth · Allium cepa (onion)Results agree
17 papers in the same direction as this paper
- positive
- positive
- positive
14 papers more in this group
See all 18 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.