Petiole length
Average petiol length, from the base to the insertion with the blade, of at least 3 leaves in the middle portion of the main vine.
| Code | Term | Description |
|---|---|---|
| 1 | Very short | <10 cm |
| 3 | Short | 10-20 cm |
| 5 | Intermediate | 21-30 cm |
| 7 | Long | 31-40 cm |
| 9 | Very long | >40 cm |