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BBCH-scale (currants)



The BBCH-scale (currants) identifies the phenological development stages of currants (black currant = Ribes nigrum, red currant = Ribes rubrum). 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 currants

Code Description
Principal growth stage 0: Sprouting/Bud development
00 Dormancy: leaf buds and the thicker inflorescence buds closed and covered by dark brown scales
01 Beginning of bud swelling: bud scales elongated
03 End of bud swelling: edges of bud scales light coloured
07 Beginning of bud burst: first green or red leaf tips just visible
09 Leaf tips extended beyond scales
Principal growth stage 1: Leaf development
10 Leaf tips above the bud scales: first leaves separating
11 First leaves unfolded (others still unfolding)
15 More leaves unfolded, not yet full size
19 First leaves fully expanded
Principal growth stage 3: Shoot development1
31 Beginning of shoot growth: axes of developing shoots visible
32 Shoots about 20% of final length
33 Shoots about 30% of final length
3 . Stages continuous till . . .
39 Shoots about 90% of final length
Principal growth stage 5: Inflorescence emergence
51 Inflorescence buds and leaf buds swelling: buds closed, light brown scales visible
53 Bud burst: scales separated light green but sections visible
54 Green or red leaf tips above bud scales
55 First flower buds (compact raceme) visible beside unfolded leaves
56 Beginning of raceme elongation
57 First flower bud separated on elongating raceme
59 Grape stage: all flower buds separated
Principal growth stage 6: Flowering
60 First flowers open
61 Beginning of flowering: about 10% of flowers open
65 Full flowering: at least 50% of flowers open, first petals falling
67 Flowers fading: majority of petals fallen
69 End of flowering: all petals fallen
Principal growth stage 7: Development of fruit
71 Beginning of fruit growth: first fruits visible at raceme base
72 20% of fruits formed
73 30% of fruits formed
74 40% of fruits formed
75 50% of fruits formed
76 60% of fruits formed
77 70% of fruits formed
78 80% of fruits formed
79 90% of fruits formed
Principal growth stage 8: Maturity of fruit and seed
81 Beginning of ripening: change to cultivar-specific fruit color
85 Advanced ripening: first berries at base of racemes have cultivar-specific color
87 Fruit ripe for picking: most berries ripe
89 Berries at base of racemes tending to drop (beginning of fruit abscission)
Principal growth stage 9: Senescence, beginning of dormancy
91 Shoot growth completed; terminal bud developed; foliage still fully green
92 Leaves begin to discolour
93 Beginning of leaf fall
95 50% of leaves discoloured or fallen
97 All leaves fallen
99 Harvested product

1 From terminal bud

References

Meier, U.; H. Graf, M. Hess, W. Kennel, R. Klose, D. Mappes, D. Seipp, R. Stauss, J. Streif, T. van den Boom (1994). "Phänologische Entwick-lungsstadien des Kernobstes (Malus domestica Borkh. und Pyrus communis L.), des Steinobstes (Prunus-Arten), der Johannisbeere (Ribes-Arten) und der Erdbeere (Fragaria x ananassa Duch.).". Nachrichtenbl. Deut. Pflanzenschutzd. 46: 141-153.

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