 |
| |||
| ashy leaf spot or fruit spot of pear (Mycosphaerella sentina Schraet); pear leaf spot (Mycosphaerelle sentina (Fries) Schroter) | |||
| 梨褐斑病: 2 phrases in 1 subject |
| Pest control | 2 |
|
| |||
| ashy leaf spot or fruit spot of pear (Mycosphaerella sentina Schraet); pear leaf spot (Mycosphaerelle sentina (Fries) Schroter) | |||
| 梨褐斑病: 2 phrases in 1 subject |
| Pest control | 2 |