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 |
See also
References
- 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.
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