Bob White
ActiveMalus Mill. · Apple
Variety traits
Apple fruit drop
Malus Mill.
In apple trees, fruit drop is considered as pre-harvest fruit abscission caused by the physiological separation of the pedicel from the spur. The trait is evaluated by the percentage of fallen fruit and depends on environmental conditions, orchard management, and harvest timing.
In the reference 18 varieties crop Apple, where this is mentioned in the description.
For apple trees, this indicator is defined as the tree's response to environmental conditions and harvest timing, where the primary physiological indicator is the ease of pedicel detachment from the spur due to tissue suberization. Evaluation is conducted by calculating the percentage of fallen fruit relative to the potential yield, with damage exceeding 30% considered critical.
The process of pre-harvest abscission is closely linked to the functionality of the pedicel xylem and the increase in internal ethylene concentration in the fruit. Fruit loss is triggered by moisture deficit, excessive nitrogen nutrition, pest and disease infestation, and delayed harvesting. June drop of fruitlets is classified as a separate physiological self-regulation mechanism of the tree and is not considered a varietal fruit drop trait.
General information about the subject — on the page Shattering.
Varieties of Apple mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Spartan
TerminatedMalus Mill. · Apple
SK
1 record