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BBCH-scale (hop)




The BBCH-scale (hop) identifies the phenological development stages of hops (Humulus lupulus). It is a plant species specific version of the BBCH-scale.

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 hop
Code Description
Principal growth stage 0: Sprouting
00 Dormancy: rootstock without shoots (uncut)
01 Dormancy: rootstock without shoots (cut)
07 Rootstock with shoots (uncut)
08 Beginning of shoot-growth (rootstock cut)
09 Emergence: first shoots emerge at the soil surface
Principal growth stage 1: Leaf development
11 First pair of leaves unfolded
12 2nd pair of leaves unfolded (beginning of twining)
13 3rd pair of leaves unfolded
1 . Stages continuous till . . .
19 9 and more pairs of leaves unfolded
Principal growth stage 2: Formation of side shoots
21 First pair of side shoots visible
22 2nd pair of side shoots visible
23 3rd pair of side shoots visible
2 . Stages continuous till . . .
29 Nine and more pairs of side shoots visible (secondary side shoots occur)
Principal growth stage 3: Elongation of bines
31 Bines have reached 10% of top wire height
32 Bines have reached 20% of top wire height
33 Bines have reached 30% of top wire height
3 . Stages continuous till . . .
38 Plants have reached the top wire
39 End of bine growth
Principal growth stage 5: Inflorescence emergence
51 Inflorescence buds visible
55 Inflorescence buds enlarged
Principal growth stage 6: Flowering
61 Beginning of flowering: about 10% of flowers open
62 About 20% of flowers open
63 About 30% of flowers open
64 About 40% of flowers open
65 Full flowering: about 50% of flowers open
66 About 60% of flowers open
67 About 70% of flowers open
68 About 80% of flowers open
69 End of flowering
Principal growth stage 7: Development of cones
71 Beginning of cone development: 10% of inflorescences are cones
75 Cone development half way: all cones visible, cones soft, stigmas still present
79 Cone development complete: nearly all cones have reached full size
Principal growth stage 8: Maturity of cones
81 Beginning of maturity: 10% of cones are compact
82 20% of cones are compact
83 30% of cones are compact
84 40% of cones are compact
85 Advanced maturity: 50% of cones are compact
86 60% of cones are compact
87 70% of cones are compact
88 80% of cones are compact
89 Cones ripe for picking: cones closed; lupulin golden; aroma potential fully developed
Principal growth stage 9: Senescence, entry into dormancy
92 Overripeness: cones yellow-brown discoloured, aroma deterioration
97 Dormancy: leaves and stems dead

References

Rossbauer, G.; L. Buhr, H. Hack, S. Hauptmann, R. Klose, U. Meier, R. Staus, E. Weber (1995). "Phänologische Entwicklungsstadien von Kultur-Hopfen (Humulus lupulus L.).": 249-253.

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "BBCH-scale_(hop)". A list of authors is available in Wikipedia.
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