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 beet
|
Code
| Description
|
Principal growth stage 0: Germination
|
00 | Dry seed
|
01 | Beginning of imbibition: seeds begins to take up water
|
03 | Seed imbibition complete (pellet cracked)
|
05 | Radicle emerged from seed (pellet)
|
07 | Shoot emerged from seed (pellet)
|
09 | Emergence: shoot emerges through soil surface
|
Principal growth stage 1: Leaf development (youth stage)
|
10 | First leaf visible (pinhead-size): cotyledons horizontally unfolded
|
11 | First pair of leaves visible, not yet unfolded (pea-size)
|
12 | 2 leaves (first pair of leaves) unfolded
|
14 | 4 leaves (2nd pair of leaves) unfolded
|
15 | 5 leaves unfolded
|
1 . | Stages continuous till . . .
|
19 | 9 and more leaves unfolded
|
Principal growth stage 3: Rosette growth (crop cover)
|
31 | Beginning of crop cover: leaves cover 10% of ground
|
32 | Leaves cover 20% of ground
|
33 | Leaves cover 30% of ground
|
34 | Leaves cover 40% of ground
|
35 | Leaves cover 50% of ground
|
36 | Leaves cover 60% of ground
|
37 | Leaves cover 70% of ground
|
38 | Leaves cover 80% of ground
|
39 | Crop cover complete: leaves cover 90% of ground
|
49 | Beet root has reached harvestable size
|
Principal growth stage 5: Inflorescence emergence (2nd year of growth)
|
51 | Beginning of elongation of main stem
|
52 | Main stem 20 cm long
|
53 | Side shoot buds visible on main stem
|
54 | Side shoots clearly visible on main stem
|
55 | First individual flower buds on side shoots visible
|
59 | First bracts visible; flower buds still closed
|
Principal growth stage 6: Flowering
|
60 | First flowers open
|
61 | Beginning of flowering: 10% of flowers open
|
62 | 20% of flowers open
|
63 | 30% of flowers open
|
64 | 40% of flowers open
|
65 | Full flowering: 50% of flowers open
|
67 | Flowering declining: 70% of flowers open or dry
|
69 | End of flowering: all flowers dry, fruit set visible
|
Principal growth stage 7: Development of fruit
|
71 | Beginning of seed development: seeds visible in infructescence
|
75 | Pericarp green; fruit still mouldable; perisperm milky; colour of seed coat: beige
|
Principal growth stage 8: Ripening
|
81 | Beginning of ripening: pericarp green-brown, seed coat light brown
|
85 | Pericarp light brown, seed coat reddish brown
|
87 | Pericarp hard, seed coat dark brown
|
89 | Fully ripe: seed coat final colour (specific to variety and species), perisperm hard
|
Principal growth stage 9: Senescence
|
91 | Beginning of leaf discolouration
|
93 | Most leaves yellowish
|
95 | 50% of leaves brownish
|
97 | Leaves dead
|
99 | Harvested product (seeds)
|