Claim · model-written summary
Bordeaux spray before sulfur dioxide strongly promoted Hassaku orange leaf fall.
- Taxon
- Hassaku oranges
Citrus hassakue0 - Treatment
- treatment after the Bordeaux spraye0
- Outcome
- leaf falle0
- Direction
- much promotede0
- Comparator
- single treatment of sulfur dioxidee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“in Hassaku oranges leaf fall did not take place readily by the single treatment of sulfur dioxide. It was however much promoted by the treatment after the Bordeaux spray.”
Title
Sulfur dioxide gas injury to fruit trees. III.
J. MATSUSHIMA; M. HARADA Journal of the Japanese Society for Horticultural Science 1965. doi:10.2503/jjshs.34.272
Other claims from this paper (10)
- Intervention effect Sulfur dioxide alone readily induced leaf fall in Satsuma oranges.
- Intervention effect Bordeaux spray before sulfur dioxide made Satsuma orange leaf fall more marked.
- Intervention effect Sulfur dioxide alone did not readily cause leaf fall in Hassaku oranges.
- Association Leaf copper content increased as sulfur dioxide concentration rose in Satsuma oranges.
- Association Leaf copper content increased as sulfur dioxide concentration rose in Hassaku oranges.
- Association Leaf fall increased as sulfur dioxide concentration rose in Satsuma oranges.
- Association Leaf fall increased as sulfur dioxide concentration rose in Hassaku oranges.
- Intervention effect Bordeaux spray increased leaf copper content in both citrus species.
- Association Leaf copper content was not closely connected with leaf fall.
- Mechanism Authors proposed that SO2 toxicity and copper released from Bordeaux mixture jointly caused leaf fall.