Growth stages of mono-and dicotyledonous plants - Regione ...

Bulb vegetables Feller et al., 1995 a
Phenological growth stages and BBCH-identification keys
of bulb vegetables
Code Description
2- and 3digit
Principal growth stage 5: Inflorescence emergence
51 501 Onion bulb begins to elongate
53 503 30% of the expected length of flower stem reached
55 505 Flower stem at full length; sheath closed
57 507 Sheath burst open
59 509 First flower petals visible; flowers still closed
2- and 3digit
Principal growth stage 6: Flowering
60 600 First flowers open (sporadically)
61 601 Beginning of flowering: 10% of flowers open
62 602 20% of flowers open
63 603 30% of flowers open
64 604 40% of flowers open
65 605 Full flowering: 50% of flowers open
67 607 Flowering finishing: 70% of petals fallen or dry
69 609 End of flowering
2- and 3digit
Principal growth stage 7: Development of fruit
71 701 First capsules formed
72 702 20% of capsules formed
73 703 30% of capsules formed
74 704 40% of capsules formed
75 705 50% of capsules formed
76 706 60% of capsules formed
77 707 70% of capsules formed
78 708 80% of capsules formed
79 709 Capsule development complete; seeds pale
2- and 3digit
Principal growth stage 8: Ripening of fruit and seed
81 801 Beginning of ripening: 10% of capsules ripe
85 805 First capsules bursting
89 809 Fully ripe: seeds black and hard