Abstract
Tomato production of some locations in central and southern areas in Sri Lanka has suffered in the recent past, due to emergence of canker disease caused by Clavibacter michiganensis Subsp. michiganensis (Cmm). Recently, leaf and fruit symptoms of Cmm has observed in some exotic tomato cultivars grown in hot (350C – 400C) and humid areas. Now it has become a problem constraining production of healthy seeds, nursery seedlings at commercial scale and profitable tomato cultivation. Earlier it was suspected that the symptoms of leaves resemble damage caused by fungal pathogens and attempts have been made to control this problem by foliar spraying of fungicides. However, it was failed and at present this disease has limited to some of the locations in tomato cultivations of the country. Canker disease has been first identified in year 2015 in tomato cultivation of exotic varieties in central province with the technical collaboration of JAICA, Sri Lanka. It was noted that symptoms of tomato canker disease initiate warm and moist condition and the main symptoms observed in the effected plants were leaf yellowing and necrosis around leaf margins. Fruit symptoms were occasionally observed as small dark spots on the fruit surrounded by a white halo. Tomato cultivars with some tolerance to canker have been introduced, but there is little significant tolerance in commercial tomato varieties
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Claims 7
Claim · model-written summary
Canker disease caused by Cmm has harmed tomato production in parts of Sri Lanka.
- Taxon
- Tomato
Solanum lycopersicumt0 - Interactor
- Clavibacter michiganensis Subsp. michiganensis
Clavibacter michiganensis subsp. michiganensise2pathogen - Outcome
- Tomato productione1
- Setting
- Sri Lankae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e1“Tomato production of some locations in central and southern areas in Sri Lanka has suffered in the recent past, due to emergence of canker disease caused by Clavibacter michiganensis Subsp. michiganensis (Cmm).”
e2“Clavibacter michiganensis Subsp. michiganensis (Cmm)”
Claim · model-written summary
Leaf and fruit symptoms occurred in exotic tomato cultivars in hot, humid areas.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- exotic tomato cultivarse1
- Interactor
- Clavibacter michiganensis Subsp. michiganensisClavibacter michiganensis subsp. michiganensise2pathogen
- Outcome
- leaf and fruit symptomse1
- Qualifier
- hot (350C – 400C) and humid arease1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e1“Recently, leaf and fruit symptoms of Cmm has observed in some exotic tomato cultivars grown in hot (350C – 400C) and humid areas.”
e2“Clavibacter michiganensis Subsp. michiganensis (Cmm)”
Claim · model-written summary
Foliar fungicide spraying failed to control tomato canker.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- foliar spraying of fungicidese1
- Interactor
- Clavibacter michiganensis Subsp. michiganensisClavibacter michiganensis subsp. michiganensise3pathogen
- Outcome
- control this probleme1
- Direction
- failede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e1“attempts have been made to control this problem by foliar spraying of fungicides.”
e2“However, it was failed and at present this disease has limited to some of the locations in tomato cultivations of the country.”
e3“canker disease caused by Clavibacter michiganensis Subsp. michiganensis (Cmm)”
Claim · model-written summary
Tomato canker was first identified in exotic varieties in the central province in 2015.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- exotic varietiese1
- Interactor
- Clavibacter michiganensis Subsp. michiganensisClavibacter michiganensis subsp. michiganensise2pathogen
- Outcome
- Canker diseasee1
- Setting
- central provincee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e1“Canker disease has been first identified in year 2015 in tomato cultivation of exotic varieties in central province with the technical collaboration of JAICA, Sri Lanka.”
e2“Clavibacter michiganensis Subsp. michiganensis (Cmm)”
Claim · model-written summary
Tomato canker symptoms appeared under warm, moist conditions and included leaf yellowing and marginal necrosis.
- Taxon
- TomatoSolanum lycopersicumt0
- Interactor
- Clavibacter michiganensis Subsp. michiganensisClavibacter michiganensis subsp. michiganensise2pathogen
- Outcome
- leaf yellowing and necrosis around leaf marginse1
- Qualifier
- warm and moist conditione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e1“It was noted that symptoms of tomato canker disease initiate warm and moist condition and the main symptoms observed in the effected plants were leaf yellowing and necrosis around leaf margins.”
e2“Clavibacter michiganensis Subsp. michiganensis (Cmm)”
Claim · model-written summary
Fruit symptoms occasionally appeared as dark spots surrounded by a white halo.
- Taxon
- TomatoSolanum lycopersicumt0
- Interactor
- Clavibacter michiganensis Subsp. michiganensisClavibacter michiganensis subsp. michiganensise2pathogen
- Outcome
- small dark spots on the fruit surrounded by a white haloe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e1“Fruit symptoms were occasionally observed as small dark spots on the fruit surrounded by a white halo.”
e2“Clavibacter michiganensis Subsp. michiganensis (Cmm)”
Claim · model-written summary
Some canker tolerant tomato cultivars were introduced, while commercial varieties showed little significant tolerance.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- commercial tomato varietiese1
- Interactor
- Clavibacter michiganensis Subsp. michiganensisClavibacter michiganensis subsp. michiganensise2pathogen
- Outcome
- little significant tolerancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato”
e1“Tomato cultivars with some tolerance to canker have been introduced, but there is little significant tolerance in commercial tomato varieties”
e2“Clavibacter michiganensis Subsp. michiganensis (Cmm)”
The same questions in other papers
application · Clavibacter michiganensis subsp. michiganensis · Solanum lycopersicum (tomato)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 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.