Claim · model-written summary
Disease severity correlated negatively with RH levels of 40% and below at 1 to 4 weeks BDE.
- Taxon
- tomato
Solanum lycopersicumt0 - Interactor
- Oidium neolycopersiciErysiphe neolycopersicit0pathogen
- Outcome
- diseasee0
- Direction
- negatively correlatede0
- Setting
- RH levels of 40% and below at 1 to 4 weeks BDEe0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conversely, disease was negatively correlated with the duration of temperatures in the low and high ranges (5 to 15 degrees C and 35 to 40 degrees C) at 1 to 4 weeks BDE, with the duration of RH levels of 40% and below at 1 to 4 weeks BDE, and with 50 to 60% RH during the third 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 15 to 25 degrees C, 1 to 4 weeks before disease evaluation (BDE).
- 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 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.