is a used to identify the phenological development stages of a plant. A series of BBCH-scales have been developed for a range of crop species. Phenological development stages of plants are used in a number of scientific disciplines (crop physiology, phytopathology, entomology, plant breeding) and in the agriculture industry (timing of pesticide application, fertization, agricultural insurance). The BBCH-scale uses a decimal code system, which is divided into principal and secondary growth stages, and is based on the cereal code system (Zadoks scale) developed by Zadoks et al. (1974).
Officially, the abbreviation BBCH derives from Biologische B
undessortenamt and CH
emical industry. Unofficially, the abbreviation is said to represent the four agrichemical copies (B
iba-Geigy and H
oechst) that sponsored the initial development of the system.
A downloadable version //www.bba.de/veroeff/bbch/bbcheng.pdf of the BBCH Scales, including illustrations, is avaiable from the BBA//www.bba.bund.de/cln 044/nn 813794/EN/Home/homepage node.html nnn=true (Federal Biological Research Centre for Agriculture and Forestry)