The BBCH-scale (sunflower) identifies the
phenological
Phenology is the study of periodic events in biological life cycles and how these are influenced by seasonal and interannual variations in climate, as well as habitat factors (such as elevation).
Examples include the date of emergence of leaves ...
development stages of the sunflower (''
Helianthus annuus
The common sunflower (''Helianthus annuus'') is a large annual forb of the genus ''Helianthus'' grown as a crop for its edible oily seeds. Apart from cooking oil production, it is also used as livestock forage (as a meal or a silage plant), as b ...
''). It is a plant
species specific version of the
BBCH-scale The BBCH-scale is used to identify the phenological development stages of plants. BBCH-scales have been developed for a range of crop species where similar growth stages of each plant are given the same code.
Phenological development stages of plan ...
.
1 Stem elongation may occur earlier than stage 19; in this case continue with the principal stage 3
References
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External links
A downloadable version of the BBCH Scales
{{DEFAULTSORT:Bbch-Scale (Sunflower)
BBCH-scale