In biology, the BBCH-scale for grapes describes the phenological development of grapes using the BBCH-scale.
The phenological growth stages and BBCH-identification keys of grapes are:
Growth stage | Code | Description |
---|---|---|
0: Sprouting/Bud development | ||
00 | Dormancy: winter buds pointed to rounded, light or dark brown according to cultivar; bud scales more or less closed according to cultivar | |
01 | Beginning of bud swelling: buds begin to expand inside the bud scales | |
03 | End of bud swelling: buds swollen, but not green | |
05 | “Wool stage”: brown wool clearly visible | |
07 | Beginning of bud burst: green shoot tips just visible | |
09 | Bud burst: green shoot tips clearly visible | |
1: Leaf development | 11 | First leaf unfolded and spread away from shoot |
12 | 2nd leaves unfolded | |
13 | 3rd leaves unfolded | |
1 . | Stages continuous till . . . | |
19 | 9 or more leaves unfolded | |
5: Inflorescence emerge | 53 | Inflorescences clearly visible |
55 | Inflorescences swelling, flowers closely pressed together | |
57 | Inflorescences fully developed; flowers separating | |
6: Flowering | 60 | First flowerhoods detached from the receptacle |
61 | Beginning of flowering: 10% of flowerhoods fallen | |
62 | 20% of flowerhoods fallen | |
63 | Early flowering: 30% of flowerhoods fallen | |
64 | 40% of flowerhoods fallen | |
65 | Full flowering: 50% of flowerhoods fallen | |
66 | 60% of flowerhoods fallen | |
67 | 70% of flowerhoods fallen | |
68 | 80% of flowerhoods fallen | |
69 | End of flowering | |
7: Development of fruits | 71 | Fruit set: young fruits begin to swell, remains of flowers lost |
73 | Berries groat-sized, bunches begin to hang | |
75 | Berries pea-sized, bunches hang | |
77 | Berries beginning to touch | |
79 | Majority of berries touching | |
8: Ripening of berries | 81 | Beginning of ripening: berries begin to develop variety-specific colour |
83 | Berries developing colour | |
85 | Softening of berries | |
89 | Berries ripe for harvest | |
9: Senescence | 91 | After harvest; end of wood maturation |
92 | Beginning of leaf discolouration | |
93 | Beginning of leaf-fall | |
95 | 50% of leaves fallen | |
97 | End of leaf-fall | |
99 | Harvested product |
Lorenz, D.H.; K.W. Eichhorn, H. Bleiholder, R. Klose, U. Meier, E. Weber (1994). "Phänologische Entwicklungsstadien der Weinrebe (Vitis vinifera L. ssp. vinifera).". Vitic. Enol. Sci. 49: 66–70.