Diseases
Apium graveolens L.
A fungal disease of celery caused by Septoria apiicola, affecting all above-ground plant organs. It is characterized by the appearance of necrotic spots with black pycnidia, leading to a 'scorched' appearance and yield reduction.
In the reference 4 varieties crop Celery, where this is mentioned in the description.
The causal agent of Septoria blight is the fungus Septoria apiicola Speg., which affects celeriac, stalk celery, and leaf celery. The pathogen exhibits narrow specialization to the genus Apium; intraspecific classification into races has not been established, and differences between isolates are determined by their level of virulence.
The disease manifests as chlorotic spots on leaves, petioles, and stems, which eventually darken and develop a reddish border. A key diagnostic feature is the formation of small black fruiting bodies—pycnidia—in the center of the spots. Under high humidity, affected tissues coalesce, causing premature desiccation of the plant.
Commercial celery cultivars are characterized by high susceptibility to the pathogen, and specific resistance genes to this disease have not been identified in breeding practice. Disease development critically reduces the marketability of stalk celery and the mass of root vegetables.
General information about the subject — on the page Septoria leaf blotch.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Apium graveolens L. · Celery
Nunhems, NL
Apium graveolens L. · Celery
Apium graveolens L. · Celery
HILD SAMEN| Hild Samen GmbH
Apium graveolens L. · Celery