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Septoria petroselini (leaf blight: parsley )
Septoria petroselini
leaf blight: parsley
Ascochyta petroselini, Phloeospora petroselini
Asia: Iraq; North America: Canada.
Not known to occur
2025-12-20
fungus
China
parsley
SEPTPE
Septoria petroselini is a fungal pathogen that causes Septoria leaf spot of parsley. It produces small, angular to irregular brown lesions with darker margins on leaves and petioles, often leading to blighting and defoliation under cool, wet conditions. The pathogen survives on infected crop debris and is known to be seed-borne in parsley, making contaminated seed an important pathway for long-distance spread; within fields, it spreads via splashing water from rain or irrigation.
Crops
Petroselinum crispum
parsley
Yes
SEPTPE-3, SEPTPE-4, SEPTPE-5, SEPTPE-6, SEPTPE-8, SEPTPE-9, SEPTPE-10
Parsley seed is a known pathway for Septoria petroselini, as the pathogen has been reported to be seed-borne and capable of surviving on contaminated seed. Infected seed may provide primary inoculum and enable long-distance dissemination, while subsequent spread occurs locally via splash-dispersed spores.
yes
Agar plating
This method has not been validated or standardized.
ARS GRIN
Chemical, cultural
Management of Septoria petroselini relies on the use of pathogen-free seed, appropriate seed treatments, sanitation of crop debris, and cultural practices that reduce leaf wetness and splash dispersal.
SEPTPE-2, SEPTPE-4, SEPTPE-7, SEPTPE-9
2025-12-20 13:02:08
SEPTPE-3
Koike, S.T., Gladders, P. & Paulus, A.O.,Vegetable Diseases, A Color Handbook 2007, Academic Press New York
SEPTPE-4
Amein, T. A. M. (2023). NON-CHEMICAL SEED TREATMENT METHODS FOR THE CONTROL OF SEPTORIA PETROSELINI ON PARSLEY SEEDS. International Journal of Phytopathology, 12(1), 31–36.
SEPTPE-5
Kurt, S. (2003). First report of Septoria blight of parsley caused by Septoria petroselini in the Mediterranean Region of Turkey. Plant Disease, 87(1), 99-99.
SEPTPE-6
Tok, F.M. and Kurt, Ş., 2019. The effect of hot water treatment on seed transmission of Septoria petroselini, the causal agent of septoria blight on parsley.(ABSTRACT)
SEPTPE-8
Kurt, S., & Tok, F. M. (2006). Influence of inoculum concentration, leaf age, temperature, and duration of leaf wetness on Septoria blight of parsley. Crop protection, 25(6), 556-561.
SEPTPE-9
Tok, F. M. (2008). Chemical control of Septoria blight of parsley caused by Septoria petroselini. Turkish Journal of Agriculture and Forestry, 32(6), 487-494.
SEPTPE-10
Sherf, A.F., MacNab, A.A., 1986. Celery. In: Vegetable Diseases and their Control. Wiley, New York. pp. 157–201.
ARS GRIN
Farr, DF and Rossman AY 2015. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. http://nt.ars-grin.gov/fungaldatabases/
SEPTPE-2
Miller S.A., Ccolburn G.C. & Evans W.B. 1999, Management of Septoria leaf blight of parsley with fungicides and effi-cacy of a disease predictive model.Phytopathology 83:S53
SEPTPE-7
Smith, J.M., Dunez, J., Philips, D.H., Lelliott, R.A., Archer, S.A., 1988. European Handbook of Plant Diseases. Blackwell Scientific Publications, Oxford, pp. 583.
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