Table 2 Description of the stages of spring (S) and autumn (A) phenology that were recorded in the hybrid aspen progeny trial during the third and sixth growing seasons
Stage | Description |
|---|---|
Spring | |
S1 | Bud-burst, leaves emerge from the bud about 5 mm |
S2 | All the leaves are unfolded |
S3 | All the leaves have attained full size |
Autumn | |
A1 | Half of the leaves are yellowed, defoliation has not started |
A2 | Defoliation of half of the leaves |
A3 | Defoliation of all the leaves, bud-set |