| apple scab |
Venturia inaequalis |
8 |
| Armillaria root rot |
Armillaria mellea |
1 |
| Armillaria root rots |
Armillaria spp. |
1 |
| bitter rot and anthracnose |
Colletotrichum gloeosporioides |
3 |
| black rot |
Botryosphaeria obtusa |
2 |
| cedar-apple rust |
Gymnosporangium juniperi-virginianae |
13 |
| Cytospora cankers |
Cytospora spp. |
1 |
| fire blight |
Erwinia amylovora |
2 |
| flyspeck |
Schizothyrium pomi |
1 |
| Japanese apple rust |
Gymnosporangium yamadae |
2 |
| leaf spot |
Ceratobasidium stevensii |
2 |
| Nectria canker |
Nectria galligena |
1 |
| Phytophthora root and crown rots |
Phytophthora spp. |
1 |
| powdery mildew |
Podosphaera leucotricha |
3 |
| southern blight |
Sclerotium rolfsii |
5 |
| Xylaria root rots |
Xylaria spp. |
1 |