O. korrae 16 claims

Interactor role: pathogen

Literal values, not normalised. 183,098 distinct spellings cover 1,706,259 claims; only letter case and spacing are merged, so “maize”, “corn” and “Zea mays L.” are three separate entries here. The By interacting organism view merges spellings of one organism through NCBI Taxonomy.

16 claims

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Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Most fungicides were less effective against O. korrae than O. herpotricha in laboratory and site trials.

Taxon: bermudagrassCynodon dactylone1
Treatment: fungicidese0
Interactor: O. korraeOphiosphaerella korraee0pathogen
Outcome: effective against O. korraee0
Direction: less effectivee0
Comparator: O. herpotrichae0

Verbatim

e0
“Most fungicides were generally less effective against O. korrae than O. herpotricha in vitro and in situ”
✓ located verbatim in the source · abstract, characters 1208–1312

e1
“Ophiosphaerella herpotricha and O. korrae are the two most common fungal species that cause the bermudagrass disease spring dead spot (SDS) in North America.”
✓ located verbatim in the source · abstract, characters 0–157

Title

Response of Ophiosphaerella herpotricha and O. korrae , causal agents of spring dead spot, to fungicides in vitro and in situ

Wendell J. Hutchens; Jordan Booth; James M. Goatley; et al. Plant Disease 2026. doi:10.1094/pdis-06-25-1173-re

Other claims from this paper (5)

Intervention effect SDHI fungicides were the most efficacious class for spring dead spot across pathogen species.
Intervention effect Isofetamid had low EC50 and generally excellent spring dead spot suppression.
Intervention effect Penthiopyrad had low EC50 and generally excellent spring dead spot suppression.
Intervention effect Pydiflumetofen had low EC50 and generally excellent spring dead spot suppression.
Recommendation Authors recommend selecting fungicides according to the predominant Ophiosphaerella species or choosing one effective against both.

Observationobservedoriginal resultmeasured

Claim · model-written summary

O. korrae was recovered from 73% of sampled locations.

Taxon: bermudagrassCynodon dactylone1
Interactor: O. korraeOphiosphaerella korraee0pathogen
Outcome: O. korrae was recoverede0
Value: 73%e0

Verbatim

e0
“O. korrae was recovered from 73% of the locations”
✓ located verbatim in the source · abstract, characters 952–1001

e1
“bermudagrass (Cynodon dactylon)”
✓ located verbatim in the source · abstract, characters 26–57

Title

Geographic Distribution of Ophiosphaerella Species in the Mid-Atlantic United States

Wendell J. Hutchens; Caleb A. Henderson; Elizabeth A. Bush; et al. Plant Health Progress 2021. doi:10.1094/php-04-21-0076-s

Other claims from this paper (6)

Observation O. herpotricha was recovered from 76% of sampled locations.
Observation O. herpotricha was amplified from 55% of samples.
Observation O. korrae was amplified from 37% of samples.
Observation O. herpotricha predominated in western Virginia, central North Carolina, Delaware, and eastern Maryland.
Observation O. korrae predominated in central Maryland and Virginia and eastern Virginia and North Carolina.
Association The two pathogen species differed in frequency across certain cultivars.

Observationobservedoriginal resultmeasured

Claim · model-written summary

O. korrae was amplified from 37% of samples.

Taxon: bermudagrassCynodon dactylone1
Interactor: O. korraeOphiosphaerella korraee0pathogen
Outcome: O. korrae was amplifiede0
Value: 37%e0

Verbatim

e0
“O. korrae was amplified from 37% of the samples”
✓ located verbatim in the source · abstract, characters 1065–1112

e1
“bermudagrass (Cynodon dactylon)”
✓ located verbatim in the source · abstract, characters 26–57

Title

Geographic Distribution of Ophiosphaerella Species in the Mid-Atlantic United States

Wendell J. Hutchens; Caleb A. Henderson; Elizabeth A. Bush; et al. Plant Health Progress 2021. doi:10.1094/php-04-21-0076-s

Other claims from this paper (6)

Observationobservedoriginal resultmeasured

Claim · model-written summary

O. korrae predominated in central Maryland and Virginia and eastern Virginia and North Carolina.

Taxon: bermudagrassCynodon dactylone1
Interactor: O. korraeOphiosphaerella korraee0pathogen
Outcome: O. korrae was predominante0
Setting: central Maryland and Virginia as well as eastern Virginia and North Carolinae0

Verbatim

e0
“O. korrae was predominant in central Maryland and Virginia as well as eastern Virginia and North Carolina”
✓ located verbatim in the source · abstract, characters 1340–1445

e1
“bermudagrass (Cynodon dactylon)”
✓ located verbatim in the source · abstract, characters 26–57

Title

Geographic Distribution of Ophiosphaerella Species in the Mid-Atlantic United States

Wendell J. Hutchens; Caleb A. Henderson; Elizabeth A. Bush; et al. Plant Health Progress 2021. doi:10.1094/php-04-21-0076-s

Other claims from this paper (6)

Observation O. herpotricha was recovered from 76% of sampled locations.
Observation O. korrae was recovered from 73% of sampled locations.
Observation O. herpotricha was amplified from 55% of samples.
Observation O. korrae was amplified from 37% of samples.
Observation O. herpotricha predominated in western Virginia, central North Carolina, Delaware, and eastern Maryland.
Association The two pathogen species differed in frequency across certain cultivars.

Associationobservedoriginal resultmeasured

Claim · model-written summary

The two pathogen species differed in frequency across certain cultivars.

Taxon: bermudagrassCynodon dactylone1
Material: certain cultivarse0
Interactor: O. herpotrichaOphiosphaerella herpotrichae0pathogen
Second interactor: O. korraeOphiosphaerella korraee0pathogen
Outcome: isolated from certain cultivars more frequentlye0
Direction: more frequentlye0

Verbatim

e0
“O. herpotricha was isolated from certain cultivars more frequently than O. korrae and vice versa”
✓ located verbatim in the source · abstract, characters 1447–1543

e1
“bermudagrass (Cynodon dactylon)”
✓ located verbatim in the source · abstract, characters 26–57

Title

Geographic Distribution of Ophiosphaerella Species in the Mid-Atlantic United States

Wendell J. Hutchens; Caleb A. Henderson; Elizabeth A. Bush; et al. Plant Health Progress 2021. doi:10.1094/php-04-21-0076-s

Other claims from this paper (6)

Observation O. herpotricha was recovered from 76% of sampled locations.
Observation O. korrae was recovered from 73% of sampled locations.
Observation O. herpotricha was amplified from 55% of samples.
Observation O. korrae was amplified from 37% of samples.
Observation O. herpotricha predominated in western Virginia, central North Carolina, Delaware, and eastern Maryland.
Observation O. korrae predominated in central Maryland and Virginia and eastern Virginia and North Carolina.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Ammonium sulfate had no effect on O. korrae spring dead spot.

Taxon: bermudagrassCynodon dactylont0
Treatment: Ammonium sulfatee1
Interactor: O. korraeOphiosphaerella korraee0pathogen
Outcome: O. korraee0
Direction: no effecte0

Not reportedComparator

Verbatim

e0
“but had no effect on O. korrae”
✓ located verbatim in the source · abstract, characters 518–548

t0
“bermudagrass [ Cynodon dactylon (L.) Pers.]”
✓ located verbatim in the source · abstract, characters 98–141

e1
“Ammonium sulfate [(NH 4 ) 2 SO 4 ] provided excellent suppression of O. herpotricha”
✓ located verbatim in the source · abstract, characters 434–517

Title

Impact of nitrogen source, fall fertilizers, and preventive fungicides on spring dead spot caused by Ophiosphaerella korrae and O. herpotricha

L. P. Tredway; M. D. Soika; E. L. Butler; et al. Crop Science 2020. doi:10.1002/csc2.20306

Other claims from this paper (13)

Intervention effect Nitrogen source significantly affected spring dead spot symptoms.
Intervention effect Ammonium sulfate suppressed O. herpotricha spring dead spot.
Intervention effect Calcium nitrate suppressed O. korrae spring dead spot.
Intervention effect Fall potassium applications did not influence spring dead spot development.
Intervention effect Fall sulfur applications did not influence spring dead spot development.
Intervention effect Fall gypsum applications did not influence spring dead spot development.
Intervention effect Fall dolomitic lime applications did not influence spring dead spot development.
Intervention effect Preventive propiconazole controlled O. herpotricha.
Intervention effect Preventive propiconazole plus azoxystrobin controlled O. herpotricha.
Intervention effect Preventive tebuconazole controlled O. herpotricha.
Intervention effect Preventive fenarimol controlled O. herpotricha.
Intervention effect The tested preventive fungicides failed to significantly suppress O. korrae.
Recommendation The authors recommend pathogen identification for integrated spring dead spot management.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Calcium nitrate suppressed O. korrae spring dead spot.

Taxon: bermudagrassCynodon dactylont0
Treatment: calcium nitrate (CaNO 3 )e0
Interactor: O. korraeOphiosphaerella korraee0pathogen
Outcome: O. korraee0
Direction: suppressede0

Not reportedComparator

Verbatim

e0
“O. korrae , which was suppressed instead by calcium nitrate (CaNO 3 )”
✓ located verbatim in the source · abstract, characters 539–608

t0
“bermudagrass [ Cynodon dactylon (L.) Pers.]”
✓ located verbatim in the source · abstract, characters 98–141

Title

Impact of nitrogen source, fall fertilizers, and preventive fungicides on spring dead spot caused by Ophiosphaerella korrae and O. herpotricha

L. P. Tredway; M. D. Soika; E. L. Butler; et al. Crop Science 2020. doi:10.1002/csc2.20306

Other claims from this paper (13)

Intervention effect Nitrogen source significantly affected spring dead spot symptoms.
Intervention effect Ammonium sulfate suppressed O. herpotricha spring dead spot.
Intervention effect Ammonium sulfate had no effect on O. korrae spring dead spot.
Intervention effect Fall potassium applications did not influence spring dead spot development.
Intervention effect Fall sulfur applications did not influence spring dead spot development.
Intervention effect Fall gypsum applications did not influence spring dead spot development.
Intervention effect Fall dolomitic lime applications did not influence spring dead spot development.
Intervention effect Preventive propiconazole controlled O. herpotricha.
Intervention effect Preventive propiconazole plus azoxystrobin controlled O. herpotricha.
Intervention effect Preventive tebuconazole controlled O. herpotricha.
Intervention effect Preventive fenarimol controlled O. herpotricha.
Intervention effect The tested preventive fungicides failed to significantly suppress O. korrae.
Recommendation The authors recommend pathogen identification for integrated spring dead spot management.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The tested preventive fungicides failed to significantly suppress O. korrae.

Taxon: bermudagrassCynodon dactylont0
Treatment: Preventive applicationse1
Interactor: O. korraeOphiosphaerella korraee0pathogen
Outcome: suppression of O. korraee0
Direction: failede0

Not reportedComparator

Verbatim

e0
“but failed to provide significant suppression of O. korrae”
✓ located verbatim in the source · abstract, characters 1024–1082

t0
“bermudagrass [ Cynodon dactylon (L.) Pers.]”
✓ located verbatim in the source · abstract, characters 98–141

e1
“Preventive applications of propiconazole, propiconazole + azoxystrobin, tebuconazole, or fenarimol provided effective control of O. herpotricha”
✓ located verbatim in the source · abstract, characters 880–1023

Title

Impact of nitrogen source, fall fertilizers, and preventive fungicides on spring dead spot caused by Ophiosphaerella korrae and O. herpotricha

L. P. Tredway; M. D. Soika; E. L. Butler; et al. Crop Science 2020. doi:10.1002/csc2.20306

Other claims from this paper (13)

Intervention effect Nitrogen source significantly affected spring dead spot symptoms.
Intervention effect Ammonium sulfate suppressed O. herpotricha spring dead spot.
Intervention effect Ammonium sulfate had no effect on O. korrae spring dead spot.
Intervention effect Calcium nitrate suppressed O. korrae spring dead spot.
Intervention effect Fall potassium applications did not influence spring dead spot development.
Intervention effect Fall sulfur applications did not influence spring dead spot development.
Intervention effect Fall gypsum applications did not influence spring dead spot development.
Intervention effect Fall dolomitic lime applications did not influence spring dead spot development.
Intervention effect Preventive propiconazole controlled O. herpotricha.
Intervention effect Preventive propiconazole plus azoxystrobin controlled O. herpotricha.
Intervention effect Preventive tebuconazole controlled O. herpotricha.
Intervention effect Preventive fenarimol controlled O. herpotricha.
Recommendation The authors recommend pathogen identification for integrated spring dead spot management.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Isolate ITS sequences were 99% homologous with other O. korrae isolates.

Taxon: barleyHordeum vulgaree1
Interactor: O. korraeOphiosphaerella korraee0pathogen
Outcome: The ITS sequences of the three isolates were 99% homologous with other O. korrae isolates in GenBanke0
Value: 99%e0

Verbatim

e0
“The ITS sequences of the three isolates were 99% homologous with other O. korrae isolates in GenBank”
✓ located verbatim in the source · abstract, characters 3078–3178

e1
“Barley (Hordeum vulgare L.) is one of the most important food crops”
✓ located verbatim in the source · abstract, characters 894–961

Title

First Report of Ophiosphaerella korrae Causing Root Rot of Hordeum vulgare in Korea

S. K. Hong; H.-W. Choi; Y. K. Lee; et al. Plant Disease 2018. doi:10.1094/pdis-07-18-1125-pdn

Other claims from this paper (6)

Observation Root rot affected less than 1% of barley in the sampled field.
Observation Three isolates from diseased barley were identified as Ophiosphaerella korrae.
Observation O. korrae isolates formed a distinct clade.
Intervention effect Inoculated barley developed yellowing and died, while controls had no symptoms.
Observation The fungus was reisolated from roots of inoculated plants.
Observation This was reported as the first record of O. korrae root rot of barley.

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

O. korrae isolates formed a distinct clade.

Taxon: barleyHordeum vulgaree1
Interactor: O. korraeOphiosphaerella korraee0pathogen
Outcome: O. korrae isolates formed a single clade, distinct from other Ophiosphaerella species with significant bootstrap support.e0

Verbatim

e0
“O. korrae isolates formed a single clade, distinct from other Ophiosphaerella species with significant bootstrap support.”
✓ located verbatim in the source · abstract, characters 3210–3331

e1
“Barley (Hordeum vulgare L.) is one of the most important food crops”
✓ located verbatim in the source · abstract, characters 894–961

Title

First Report of Ophiosphaerella korrae Causing Root Rot of Hordeum vulgare in Korea

S. K. Hong; H.-W. Choi; Y. K. Lee; et al. Plant Disease 2018. doi:10.1094/pdis-07-18-1125-pdn

Other claims from this paper (6)

Observation Root rot affected less than 1% of barley in the sampled field.
Observation Three isolates from diseased barley were identified as Ophiosphaerella korrae.
Observation Isolate ITS sequences were 99% homologous with other O. korrae isolates.
Intervention effect Inoculated barley developed yellowing and died, while controls had no symptoms.
Observation The fungus was reisolated from roots of inoculated plants.
Observation This was reported as the first record of O. korrae root rot of barley.