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 stageCodeDescription0: Sprouting/Bud development00 Dormancy: winter buds pointed to rounded, light or dark brown according to cultivar; bud scales more or less closed according to cultivar01 Beginning of bud swelling: buds begin to expand inside the bud scales03 End of bud swelling: buds swollen, but not green05 “Wool stage”: brown wool clearly visible07 Beginning of bud burst: green shoot tips just visible09 Bud burst: green shoot tips clearly visible1: Leaf development11 First leaf unfolded and spread away from shoot12 2nd leaves unfolded13 3rd leaves unfolded1 . Stages continuous till ...19 9 or more leaves unfolded5: Inflorescence emerge53 Inflorescences clearly visible55 Inflorescences swelling, flowers closely pressed together57 Inflorescences fully developed; flowers separating6: Flowering60 First flowerhoods detached from the receptacle61 Beginning of flowering: 10% of flowerhoods fallen62 20% of flowerhoods fallen63 Early flowering: 30% of flowerhoods fallen64 40% of flowerhoods fallen65 Full flowering: 50% of flowerhoods fallen66 60% of flowerhoods fallen67 70% of flowerhoods fallen68 80% of flowerhoods fallen69 End of flowering7: Development of fruits71 Fruit set: young fruits begin to swell, remains of flowers lost73 Berries groat-sized, bunches begin to hang75 Berries pea-sized, bunches hang77 Berries beginning to touch79 Majority of berries touching8: Ripening of berries81 Beginning of ripening: berries begin to develop variety-specific colour83 Berries developing colour85 Softening of berries89 Berries ripe for harvest9: Senescence91 After harvest; end of wood maturation92 Beginning of leaf discolouration93 Beginning of leaf-fall95 50% of leaves fallen97 End of leaf-fall99 Harvested product
See also Annual growth cycle of grapevines
References