Figure 1. Young apple scab lesions on underside of leaf.
Figure 2. Apple scab on fruit.
Figure 3. Powdery mildew on terminal leaves.
Figure 4. Powdery mildew on fruit.
Figure 5. Cedar apple rust on leaf.
Figure 7. Quince rust on fruit
Figure 8. Quince rust on fruit (cross section of fruit).
Figure 9. Sooty blotch on fruit
Figure 10. Fly speck on fruit. Note circular pattern on injury.
Figure 11. Calyx end rot.
Figure 12. Silver leaf.
Figure 13. Phytophthora collar rot.
Figur 14. Nectria cinnabarina canker.
Figure 15. Black rot canker.
Figure 16. Black rot on fruit.
| Top of Page |
Figure 18. Fireblight twig blight.
Figure 19. Fireblight canker
Figure 20. Blister spot on Mutsu fruit.
Figure 21. Frost injury to blossoms.
Figure 22. Frost injury to spur leaves.
Figure 23. Hail damage.
Figure 24. Sun scald injury on fruit.
Figure 25. Smooth fruit russeting.
Figure 26. Corky fruit russeting.
Figure 27. Calcium chloride leaf injury to McIntosh.
Figure 28. Roadsalt spray injury.
Figure 29. Blistering of bark due to superior oil application.
Figure 30. Gramoxone herbicide injury to leaves.
Figure 31. Gramoxone herbicide injury to fruit.
Figure 32. Water core.
Figure 33. Bitter pit on fruit of Cortland apple. Note corky tissue under skin.
Figure 34. Boron deficiency (often referred to as corky core.)
Figure 35. Necrotic leaf blotch of Golden Delicious.
This site is maintained by the Government of Ontario
Queen's Printer for Ontario Last Modified:
Accessing this message means you do not have a JavaScript enabled browser. If you cannot enable JavaScript in your browser and would like to know the last modified date for this page, please contact the webmaster at -internet.webmaster.omafra@ontario.ca
This site is maintained
by the Government of Ontario 
Queen's Printer for Ontario
