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BBCH-scale (other brassica vegetables)



The BBCH-scale (other brassica vegetable) identifies the phenological development stages of other brassica vegetable (Brussels sprout = Brassica oleracea var. gemmifera, cauliflower = Brassica oleracea var. botrytis, broccoli = Brassica oleracea var. italica). It is a plant species specific version of the BBCH-scale.

A downloadable version [1] of the BBCH Scales, including illustrations, is available from the BBA [2] (Federal Biological Research Centre for Agriculture and Forestry)

Phenological growth stages and BBCH-identification keys of other brassica vegetables
Code Description
Principal growth stage 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
Principal growth stage 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
Principal growth stage 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
Principal growth stage 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
Principal growth stage 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

Principal growth stage 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
Principal growth stage 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
Principal growth stage 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
Principal growth stage 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
Principal growth stage 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

Feller, C.; 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.

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "BBCH-scale_(other_brassica_vegetables)". A list of authors is available in Wikipedia.
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