BBCH-scale (other brassica vegetables)

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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.  Missing |last6= in Authors list (help)