Plant vigour
Based on plant width and height 3 – 4 weeks after sowing
| Code | Term | Description |
|---|---|---|
| 3 | Non–vigorous | (height less than 37 cm and width less than 75 cm) |
| 5 | Intermediate | (height greater than 37cm or width greater than 75 cm) |
| 7 | Vigorous | (height greater than 37 cm and width greater than 75 cm) |
| 9 | Very vigorous | (height greater than 50 cm and width greater than 1 m) |