BBCH-scale (other brassica vegetables)
In biology, the BBCH-scale for other brassica vegetables describes the phenological development of vegetables such as brussels sprouts, cauliflower and broccoli using the BBCH-scale.
The phenological growth stages and BBCH-identification keys of other brassica vegetables are:
| Growth stage | Code | Description |
|---|---|---|
| 0: Germination | 00 | Dry seed |
| 01 | Beginning of seed imbibition | |
| 03 | Seed imbibition complete | |
| 05 | Radicle emerged from seed | |
| 07 | Hypocotyl with cotyledons breaking through seed coat | |
| 09 | Emergence: cotyledons break through soil surface | |
| 1: Leaf development (Main shoot) | 10 | Cotyledons completely unfolded; growing point or true leaf initial visible |
| 11 | First true leaf unfolded | |
| 12 | 2nd true leaf unfolded | |
| 13 | 3rd true leaf unfolded | |
| 1 . | Stages continuous till ... | |
| 19 | 9 or more true leaves unfolded | |
| 2: Formation of side shoots | 21 | First side shoot visible1 |
| 22 | 2nd side shoot visible1 | |
| 23 | 3rd side shoot visible1 | |
| 2 . | Stages continuous till ... | |
| 29 | 9 or more side shoots visible1 | |
| 3: Stem elongation of rosette growth | 31 | Main shoot has reached 10% of the expected height typical for the variety2 |
| 32 | Main shoot has reached 20% of the expected height typical for the variety2 | |
| 33 | Main shoot has reached 30% of the expected height typical for the variety2 | |
| 34 | Main shoot has reached 40% of the expected height typical for the variety2 | |
| 35 | Main shoot has reached 50% of the expected height typical for the variety2 | |
| 36 | Main shoot has reached 60% of the expected height typical for the variety2 | |
| 37 | Main shoot has reached 70% of the expected height typical for the variety2 | |
| 38 | Main shoot has reached 80% of the expected height typical for the variety2 | |
| 39 | Main shoot has reached the height typical for the variety2 | |
| 4: Development of harvestable vegetative plant parts | 41 | Lateral buds begin to develop2 Cauliflower heads begin to form;width of growing tip > 1 cm3 |
| 43 | First sprouts tightly closed2 30% of the expected head diameter reached3 | |
| 45 | 50% of the sprouts tightly closed2 50% of the expected head diameter reached3 | |
| 46 | 60% of the sprouts tightly closed2 60% of the expected head diameter reached3 | |
| 47 | 70% of the sprouts tightly closed2 70% of the expected head diameter reached3 | |
| 48 | 80% of the sprouts tightly closed2 80% of the expected head diameter reached3 | |
| 49 | Sprouts below terminal bud tightly closed2 Typical size and form reached; head tightly closed3 | |
| 5: Inflorescence emergence | 51 | Main inflorescence visible between uppermost leaves2 Branches of inflorescence begin to elongate3 |
| 55 | First individual flowers visible (still closed) | |
| 59 | First flower petals visible; flowers still closed | |
| 6: Flowering | 60 | First flowers open (sporadically) |
| 61 | Beginning of flowering: 10% of flowers open | |
| 62 | 20% of flowers open | |
| 63 | 30% of flowers open | |
| 64 | 40% of flowers open | |
| 65 | Full flowering: 50% of flowers open | |
| 67 | Flowering finishing: majority of petals fallen or dry | |
| 69 | End of flowering | |
| 7: Development of fruit | 71 | First fruits formed |
| 72 | 20% of fruits have reached typical size | |
| 73 | 30% of fruits have reached typical size | |
| 74 | 40% of fruits have reached typical size | |
| 75 | 50% of fruits have reached typical size | |
| 76 | 60% of fruits have reached typical size | |
| 77 | 70% of fruits have reached typical size | |
| 78 | 80% of fruits have reached typical size | |
| 79 | Fruits have reached typical size | |
| 8: Ripening of fruit and seed | 81 | Beginning of ripening: 10% of fruits ripe |
| 82 | 20% of fruits ripe | |
| 83 | 30% of fruits ripe | |
| 84 | 40% of fruits ripe | |
| 85 | 50% of fruits ripe | |
| 86 | 60% of fruits ripe | |
| 87 | 70% of fruits ripe | |
| 88 | 80% of fruits ripe | |
| 89 | Fully ripe: seeds on the whole plant of typical color and hard | |
| 9: Senescence | 92 | Leaves and shoots beginning to discolour |
| 95 | 50% of leaves yellow or dead | |
| 97 | Plants dead | |
| 99 | Harvested product (seeds) |
1 For broccoli
2 For brussels sprout
3 For cauliflower and broccoli
References
[edit]- C. Feller; H. Bleiholder; L. Buhr; H. Hack; M. Hess; R. Klose; U. Meier; R. Stauss; T. van den Boom; E. Weber (1995). "Phänologische Entwicklungsstadien von Gemüsepflanzen: I. Zwiebel-, Wurzel-, Knollen- und Blattgemüse". Nachrichtenbl. Deut. Pflanzenschutzd. 47: 193–206.