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 stageCodeDescription
0: Germination 00Dry seed
01Beginning of seed imbibition
03Seed imbibition complete
05Radicle emerged from seed
07Hypocotyl with cotyledons breaking through seed coat
09Emergence: cotyledons break through soil surface
1: Leaf development (Main shoot) 10Cotyledons completely unfolded; growing point or true leaf initial visible
11First true leaf unfolded
122nd true leaf unfolded
133rd true leaf unfolded
1 .Stages continuous till ...
199 or more true leaves unfolded
2: Formation of side shoots 21First side shoot visible1
222nd side shoot visible1
233rd side shoot visible1
2 .Stages continuous till ...
299 or more side shoots visible1
3: Stem elongation of rosette growth 31Main shoot has reached 10% of the expected height typical for the variety2
32Main shoot has reached 20% of the expected height typical for the variety2
33Main shoot has reached 30% of the expected height typical for the variety2
34Main shoot has reached 40% of the expected height typical for the variety2
35Main shoot has reached 50% of the expected height typical for the variety2
36Main shoot has reached 60% of the expected height typical for the variety2
37Main shoot has reached 70% of the expected height typical for the variety2
38Main shoot has reached 80% of the expected height typical for the variety2
39Main shoot has reached the height typical for the variety2
4: Development of harvestable vegetative plant parts 41Lateral buds begin to develop2

Cauliflower heads begin to form;width of growing tip > 1 cm3

43First sprouts tightly closed2

30% of the expected head diameter reached3

4550% of the sprouts tightly closed2

50% of the expected head diameter reached3

4660% of the sprouts tightly closed2

60% of the expected head diameter reached3

4770% of the sprouts tightly closed2

70% of the expected head diameter reached3

4880% of the sprouts tightly closed2

80% of the expected head diameter reached3

49Sprouts below terminal bud tightly closed2

Typical size and form reached; head tightly closed3

5: Inflorescence emergence 51Main inflorescence visible between uppermost leaves2

Branches of inflorescence begin to elongate3

55First individual flowers visible (still closed)
59First flower petals visible; flowers still closed
6: Flowering 60First flowers open (sporadically)
61Beginning of flowering: 10% of flowers open
6220% of flowers open
6330% of flowers open
6440% of flowers open
65Full flowering: 50% of flowers open
67Flowering finishing: majority of petals fallen or dry
69End of flowering
7: Development of fruit 71First fruits formed
7220% of fruits have reached typical size
7330% of fruits have reached typical size
7440% of fruits have reached typical size
7550% of fruits have reached typical size
7660% of fruits have reached typical size
7770% of fruits have reached typical size
7880% of fruits have reached typical size
79Fruits have reached typical size
8: Ripening of fruit and seed 81Beginning of ripening: 10% of fruits ripe
8220% of fruits ripe
8330% of fruits ripe
8440% of fruits ripe
8550% of fruits ripe
8660% of fruits ripe
8770% of fruits ripe
8880% of fruits ripe
89Fully ripe: seeds on the whole plant of typical color and hard
9: Senescence 92Leaves and shoots beginning to discolour
9550% of leaves yellow or dead
97Plants dead
99Harvested product (seeds)

1 For broccoli
2 For brussels sprout
3 For cauliflower and broccoli

References

  • 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.
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