BBCH-scale (root and stem vegetable)

The BBCH-scale (root and stem vegetables) identifies the phenological development stages of the root and stem vegetables (Carrot = Daucus carota ssp. sativus, celeriac = Apium graveolens var. rapaceum, kohlrabi = Brassica oleracea var. gongylodes, chicory = Cichorium intybus var. foliosum, radish = Raphanus sativus ssp., swede = Brassica napus ssp. rapifera, scorzonera = Scorzonera hispanica). It is a plant species specific version of the BBCH-scale.

Phenological growth stages and BBCH-identification keys of root and stem 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 4: Development of harvestable vegetative plant parts
41	Roots beginning to expand (diameter > 0,5 cm)
42	20% of the expected root diameter reached
43	30% of the expected root diameter reached
44	40% of the expected root diameter reached
45	50% of the expected root diameter reached
46	60% of the expected root diameter reached
47	70% of the expected root diameter reached
48	80% of the expected root diameter reached
49	Expansion complete; typical form and size of roots reached
Principal growth stage 5: Inflorescence emergence
51	Main shoot begins to elongate
53	30% of the expected height of the main shoot reached
55	First individual flowers of main inflorescence visible (still closed)
57	First individual flowers of secondary inflorescences 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: Rispening of fruit and seed
81	Beginning of ripening: 10% of fruits ripe, or 10% of seeds of typical colour, dry and hard
85	50% of the fruits ripe, or 50% of seeds of typical colour, dry and hard
89	Fully ripe: seeds on the whole plant of typical colour and hard
Principal growth stage 9: Senescence
92	Leaves and shoots beginning to discolour
95	50% of leaves yellow or dead
97	Plants or above ground parts dead
99	Harvested product (seeds)

Additional recommended knowledge

Essential Laboratory Skills Guide

Daily Sensitivity Test

Daily Visual Balance Check

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.

Category: BBCH-scale

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

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BBCH-scale (root and stem vegetable)

Additional recommended knowledge

Essential Laboratory Skills Guide

Daily Sensitivity Test

Daily Visual Balance Check

References

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