| Miscellaneous diseases and disorders |
|
|---|---|
| Bitter pit | Localized calcium deficiency |
| Blossom blast | Boron deficiency |
| Burrknot | Genetically predisposed rootstock |
| Fruit cracking | Genetic |
| Fruit russet | Frost, sprays, etc. |
| Green mottle | Unidentified |
| Hollow apple | High temperature |
| Internal bark necrosis = measles | Low pH and mineral nutrient imbalance |
| Internal browning | Boron and calcium deficiencies, etc. |
| Jonathan spot | Reduced by controlled atmosphere storage |
| Narrow leaf | Genetic |
| Necrotic leaf blotch of ‘Golden Delicious’ | Rapid synthesis of gibberellins triggered by environmental factors |
| Storage scald | Injury to fruit surfaces by naturally occurring gases produced by the fruit |
| Sunburn | Sun injury to fruit |
| Sunscald | Freezing of bark following high temperatures in winter |
| Water core | Sorbitol accumulation |
Read more about this topic: List Of Apple Diseases
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