BBCH-scale (strawberry)
The BBCH-scale (strawberry) identifies the phenological development stages of strawberry (Fragaria ananassa). It is a plant species specific version of the BBCH-scale.
Phenological growth stages and BBCH-identification keys of strawberry | |
---|---|
Code | Description |
Principal growth stage 0: Sprouting/Bud development | |
00 | Dormancy: Leaves prostrate and partly dead |
03 | Main bud swelling |
Principal growth stage 1: Leaf development | |
10 | First leaf emerging |
11 | First leaf unfolded |
12 | 2nd leaf unfolded |
13 | 3rd leaf unfolded1 |
1 . | Stages continuous till . . . |
19 | 9 or more leaves unfolded |
Principal growth stage 4: Development of stolons and young plants | |
41 | Beginning of stolon (runner) formation: stolons visible (about 2 cm long) |
42 | First daughter plant visible |
43 | Beginning of root development in first daughter plant |
45 | First daughter plant with roots (ready for planting) |
49 | Several daughter plants with roots (ready for planting) |
Principal growth stage 5: Inflorescence emergence | |
55 | First set flowers at the bottom of the rosette |
56 | Inflorescence elongating |
57 | First flower buds emerged (still closed) |
58 | Early balloon stage: first flowers with petals forming a hollow ball |
59 | Most flowers with petals forming a hollow ball |
Principal growth stage 6: Flowering | |
60 | First flowers open (primary or A-flower) |
61 | Beginning of flowering: about 10% of flowers open |
65 | Full flowering: secondary (B) and tertiary (C) flowers open,
first petals falling |
67 | Flowers fading: majority of petals fallen |
Principal growth stage 7: Development of fruit | |
71 | Receptacle protruding from sepal whorl |
73 | Seeds clearly visible on receptacle tissue |
Principal growth stage 8: Maturity of fruit | |
81 | Beginning of ripening: most fruits white in colour |
85 | First fruits have cultivar-specific colour |
87 | Main harvest: more fruits coloured |
89 | Second harvest: more fruits coloured |
Principal growth stage 9: Senescence, beginning of dormancy | |
91 | Beginning of axillary bud formation |
92 | New leaves with smaller lamina and shortened stalk visible |
93 | Old leaves dying, young leaves curling; old leaves of cultivarspecific colour |
97 | Old leaves dead |
1 Normally after the three leaf stage the bud development occurs in principal growth stage 5. Meier, U.; H. Graf; M. Hess; W. Kennel; R. Klose; D. Mappes; D. Seipp; R. Stauss; J. Streif; T. van den Boom (1994). "Phänologische Entwick-lungsstadien des Kernobstes (Malus domestica Borkh. und Pyrus communis L.), des Steinobstes (Prunus-Arten), der Johannisbeere (Ribes-Arten) und der Erdbeere (Fragaria x ananassa Duch.).". Nachrichtenbl. Deut. Pflanzenschutzd. 46: 141–153.
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