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BBCH-scale (faba bean)




The BBCH-scale (faba bean) identifies the phenological development stages of faba beans (Vicia faba). 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 faba bean
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 Shoot emerged from seed (plumule apparent)
08 Shoot growing towards soil surface
09 Emergence: shoot emerges through soil surface
Principal growth stage 1: Leaf development1
10 Pair of scale leaves visible (may be eaten or lost)
11 First leaf unfolded
12 2 leaves unfolded
13 3 leaves unfolded
1 . Stages continuous till . . .
19 9 or more leaves unfolded
Principal growth stage 2: Formation of side shoots
20 No side shoots
21 Beginning of side shoot development: first side shoot detectable
22 2 side shoots detectable
23 3 side shoots detectable
2 . Stages continuous till . . .
29 End of side shoot development: 9 or more side shoots detectable
Principal growth stage 3: Stem elongation
30 Beginning of stem elongation
31 One visibly extended internode2
32 2 visibly extended internodes
33 3 visibly extended internodes
3 . Stages continuous till . . .
39 9 or more visibly extended internodes
Principal growth stage 5: Inflorescence emergence
50 Flower buds present, still enclosed by leaves
51 First flower buds visible outside leaves
55 First individual flower buds visible outside leaves but still closed
59 First petals visible, many individual flower buds, still closed
Principal growth stage 6: Flowering
60 First flowers open
61 Flowers open on first raceme
63 Flowers open 3 racemes per plant
65 Full flowering: flowers open on 5 racemes per plant
67 Flowering declining
69 End of flowering
Principal growth stage 7: Development of fruit
70 First pods have reached final length (“flat pod”)
71 10% of pods have reached final length
72 20% of pods have reached final length
73 30% of pods have reached final length
74 40% of pods have reached final length
75 50% of pods have reached final length
76 60% of pods have reached final length
77 70% of pods have reached final length
78 80% of pods have reached final length
79 Nearly all pods have reached final length
Principal growth stage 8: Ripening
80 Beginning of ripening: seed green, filling pod cavity
81 10% of pods ripe, seeds dry and hard
82 20% of pods ripe, seeds dry and hard
83 30% of pods ripe and dark, seeds dry and hard
84 40% of pods ripe and dark, seeds dry and hard
85 50% of pods ripe and dark, seeds dry and hard
86 60% of pods ripe and dark, seeds dry and hard
87 70% of pods ripe and dark, seeds dry and hard
88 80% of pods ripe and dark, seeds dry and hard
89 Fully ripe: nearly all pods dark, seeds dry and hard
Principal growth stage 9: Senescence
93 Stems begin to darken
95 50% of stems brown or black
97 Plant dead and dry
99 Harvested product

1 Stem elongation may occur earlier than stage 19; in this case continue with the principal stage 3
2 First internode extends from the scale leaf node to the first true leaf node

References

Lancashire, P.D.; H. Bleiholder, P. Langeluddecke, R. Stauss, T. van den Boom, E. Weber, A. Witzen-Berger (1991). "An uniform decimal code for growth stages of crops and weeds.". Ann. appl. Biol. 119: 561-601..

Weber, E.; H. Bleiholder (1990). "Erläuterungen zu den BBCH-Dezimal-Codes für die Entwicklungsstadien von Mais, Raps, Faba-Bohne, Sonnenblume und Erbse - mit Abbildungen.". Gesunde Pflanzen 42: 308-321.

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