Claim · model-written summary
Powdery mildew severity correlated positively with 15 to 25 degrees C, 1 to 4 weeks before disease evaluation (BDE).
- Taxon
- tomato
Solanum lycopersicumt0 - Interactor
- Oidium neolycopersiciErysiphe neolycopersicit0pathogen
- Outcome
- Severity of powdery mildewe0
- Direction
- positively correlatede0
- Setting
- 15 to 25 degrees C, 1 to 4 weeks before disease evaluation (BDE)e0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Severity of powdery mildew was positively correlated with the duration of the range 15 to 25 degrees C, 1 to 4 weeks before disease evaluation (BDE), RH levels of 60 to 90% at 2 to 4 weeks BDE, and RH of 50 to 60% during the week BDE.”
t0“Tomato Caused by Oidium neolycopersici”
Title
Conditions for Development of Powdery Mildew of Tomato Caused by Oidium neolycopersici
D. Jacob; D. Rav David; A. Sztjenberg; et al. Phytopathology 2008. doi:10.1094/phyto-98-3-0270
Other claims from this paper (15)
- Observation Conidial germination was highest at 25 degrees C, 99% RH and minimal light.
- Observation Conidial germination was lowest on leaves adjacent to fruits.
- Observation Appressoria formation was optimal at 25 degrees C, 33–99% RH and 1,750 lux.
- Observation Conidia formation was greater at 20 degrees C, 70 to 85% RH and 5,150 lux than under the compared conditions.
- Observation Conidia survived and retained germination capacity for over four months after incubation at lower temperature and higher RH.
- Observation Disease did not develop at 28 degrees C in a growth chamber.
- Association Disease was less severe at higher RH within 70–99% RH than in drier conditions.
- Association Disease was less severe at lower light intensities.
- Association Powdery mildew severity correlated positively with RH levels of 60 to 90% at 2 to 4 weeks BDE.
- Association Powdery mildew severity correlated positively with RH of 50 to 60% during the week BDE.
- Association Disease severity correlated negatively with 5 to 15 degrees C and 35 to 40 degrees C.
- Association Disease severity correlated negatively with RH levels of 40% and below at 1 to 4 weeks BDE.
- Association Disease severity correlated negatively with 50 to 60% RH during the third week BDE.
- Association High RH of 90 to 100% correlated negatively with disease severity.
- Recommendation The authors suggest high temperature combined with low RH may reduce powdery mildew severity in greenhouse tomatoes.