The BBCH-scale for root and stem vegetables identifies the phenological development stages of the root and stem vegetables such as carrot, celeriac, kohlrabi, chicory, radish and swede, using the BBCH-scale.
Growth stageCodeDescription0: Germination00 Dry seed01 Beginning of seed imbibition03 Seed imbibition complete05 Radicle emerged from seed07 Hypocotyl with cotyledons breaking through seed coat09 Emergence: cotyledons break through soil surface1: Leaf development (Main shoot)10 Cotyledons completely unfolded; growing point or true leaf initial visible11 First true leaf unfolded12 2nd true leaf unfolded13 3rd true leaf unfolded1 . Stages continuous till ...19 9 or more true leaves unfolded4: Development of harvestable vegetative plant parts41 Roots beginning to expand (diameter > 0,5 cm)42 20% of the expected root diameter reached43 30% of the expected root diameter reached44 40% of the expected root diameter reached45 50% of the expected root diameter reached46 60% of the expected root diameter reached47 70% of the expected root diameter reached48 80% of the expected root diameter reached49 Expansion complete; typical form and size of roots reached5: Inflorescence emergence51 Main shoot begins to elongate53 30% of the expected height of the main shoot reached55 First individual flowers of main inflorescence visible (still closed)57 First individual flowers of secondary inflorescences visible (still closed)59 First flower petals visible; flowers still closed6: Flowering60 First flowers open (sporadically)61 Beginning of flowering: 10% of flowers open62 20% of flowers open63 30% of flowers open64 40% of flowers open65 Full flowering: 50% of flowers open67 Flowering finishing: majority of petals fallen or dry69 End of flowering7: Development of fruit71 First fruits formed72 20% of fruits have reached typical size73 30% of fruits have reached typical size74 40% of fruits have reached typical size75 50% of fruits have reached typical size76 60% of fruits have reached typical size77 70% of fruits have reached typical size78 80% of fruits have reached typical size79 Fruits have reached typical size8: Rispening of fruit and seed81 Beginning of ripening: 10% of fruits ripe, or 10% of seeds of typical colour, dry and hard85 50% of the fruits ripe, or 50% of seeds of typical colour, dry and hard89 Fully ripe: seeds on the whole plant of typical colour and hard9: Senescence92 Leaves and shoots beginning to discolour95 50% of leaves yellow or dead97 Plants or above ground parts dead99 Harvested product (seeds)
References
External links A downloadable version of the BBCH Scales