Market Diseases of Apples, Pears, and Quinces
(this book is currently out of print)

by Charles F. Pierson, research plant pathologist,
Michael J. Ceponis, research plant pathologist,
and Lacy P. McColloch, collaborator

Agriculture Handbook No. 376
Agricultural Research Service
United States Department of Agriculture, May 1971

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CONTENTS

Precautions (Note: chemical control measures may be out of date and should be checked with your local county extension agent)
Introduction

1. APPLES
   1. Alternaria rot
   2. Apple maggot injury
   3. Apple rust diseases
      1. Apple-cedar rust
      2. Quince rust
   4. Bitter pit
   5. Bitter rot
   6. Black rot
   7. Blossom-end rot
   8. Blotch
   9. Blue mold rot
   10. Botryosphaeria rot
   11. Brown core and stem cavity browning
   12. Brown rot
   13. Bruises
       1. Bruises before harvest
       2. Harvest and packing bruises
       3. Transit and handling bruises
   14. Bull's eye rot
   15. Chemical injuries
       1. Ammonia injury
       2. Diphenylamine injury
       3. Formaldehyde injury (Halo spot)
       4. Ozone injury
       5. Sodium orthophenylphenate injury
   16. Codling moth injury
   17. Controlled-atmosphere storage injury
       1. Carbon dioxide injury
       2. Low-oxygen injury
       3. Low oxygen and high carbon dioxide combined injury
   18. Core rot and moldy core
   19. Cork (boron-deficiency cork)
   20. Cork spot (York spot)
   21. Drought spot
   22. European apple sawfly injury
   23. Fisheye rot
   24. Flyspeck
   25. Frost and freezing injury
   26. Fruit spot
   27. Gray mold rot
   28. Hail injury
   29. Heat injury while on tree
   30. Honeydew and sooty mold
   31. Internal breakdown
   32. Internal browning
   33. Jonathan spot
   34. Leafhopper specking
   35. Leaf roller and green fruitworm injury
   36. Miscellaneous rots
   37. Pansy spot
   38. Pear leaf blister mite injury
   39. Phytophthora rot
   40. Pink mold rot
   41. Plum curculio injury
   42. Powdery mildew
   43. Red spots
   44. Rhizopus rot
   45. Scab
   46. Scald
       1. Ordinary scald
       2. Senescent scald of Golden Delicious
   47. Scale insect injuries
   48. Side rot
   49. Skin and flesh cracking
   50. Soft scald
   51. Soggy breakdown
   52. Sooty blotch
   53. Spongy dry rot
   54. Stigmonose
   55. Sunburn, sunscald, and delayed sunscald
   56. Virus diseases
       1. Russet ring
       2. Star crack
   57. Water core
       
       
2. PEARS
   1. Bitter rot
   2. Black end
   3. Black rot
   4. Black spot
   5. Blue mold rot
   6. Boron-deficiency pitting
   7. Brown rot
   8. Bruises
      1. Friction bruises
      2. Impact and pressure bruises
   9. Bull's-eye rot
   10. Chemical injuries
       1. Ammonia injury
       2. Copper injury
       3. Sodium orthophenylphenate injury
   11. Core breakdown
   12. Cork spot
   13. Freezing injury (prolonged freezing in storage)
   14. Gray mold rot
   15. Green stain
   16. Pear leaf blister mite injury
   17. Pear psylla injury
   18. Phytophthora rot
   19. Pink mold rot
   20. Pithy brown core
   21. Powdery mildew
   22. Rhizopus rot
   23. San Jose scale injury
   24. Scab
   25. Scald
       1. Senescent scald (common)
       2. Superficial scald (Anjou)
   26. Side rot
   27. Sooty blotch
   28. Virus disease
       1. Stony pit
          
          
3. QUINCES
   1. Black rot
   2. Black spot
   3. Blue mold rot
   4. Brown rot
   5. Oriental fruit moth injury