Claim · model-written summary
Manual defoliation before harvest showed that premature disease defoliation can substantially affect yield.
- Taxon
- blueberrye0
- Treatment
- Manual defoliatione0
- Outcome
- yielde0
- Qualifier
- various times prior to harveste0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValue
Verbatim
e0“Manual defoliation of blueberry stems at various times prior to harvest showed the substantial extent to which premature defoliation by this disease can affect yield.”
Title
Shawkat Ali; Paul D. Hildebrand; Willy E. Renderos; et al. Phytopathology 2021. doi:10.1094/phyto-04-20-0143-r
Other claims from this paper (14)
- Observation The blueberry pathogen aligns closely with Sphaerulina based on sequence analysis.
- Observation Phylogeny places the pathogen near Sphaerulina amelanchier but sufficiently distinct for a new species.
- Observation No teleomorph ascomata were found.
- Observation Ascospores recovered from leaves morphologically fit Mycosphaerella.
- Observation Morphological data also support designation of a new species.
- Observation The authors propose Sphaerulina vaccinii as the pathogen name.
- Mechanism Initial field inoculum apparently originates from pycnidia on overwintered leaves and stem cankers.
- Observation More than 90% of initial inoculum was released during flowering from late May through June.
- Observation Leaf spots began appearing in early June.
- Observation Disease severity increased linearly over time.
- Observation Secondary inoculum production from diseased foliage was minimal and judged epidemiologically unimportant.
- Observation Disease-related defoliation began in early July.
- Observation Disease-related defoliation increased nonlinearly after early July.
- Association Stem lesions affected yield even without killing stems.