The BBCH-scale (potato) identifies the phenological development stages of a potato (Solanum tuberosum). It is a plant species-specific version of the BBCH-scale.
1 For second generation sprouts
2 Stem development stops after termination of main stem by an inflorescence. Branches arise from axils of upper leaves of the main stem, exhibiting a sympodial branching pattern
References
BBCH-scale (potato) Wikipedia(Text) CC BY-SA