Petroselinum crispum
parsley
5 Related Pests
Phoma apiicola
fungus
Subplenodomus apiicola
Temperate North America, Europe, Australia, Asia
MI, NY, CA, OH, WI
Chile
2025-12-26
Phoma apiicola is a fungal pathogen of celery that causes rot of petiole bases, crowns, and roots. It produces characteristic pycnidia in infected tissue, survives in soil and plant debris, and can potentially be seed-borne, though seed transmission remains uncertain.
celery, celeriac in nature
No
No references were found indicating parsley seed is a pathway.
Alternaria dauci
fungus
Alternaria brassicae var. dauci, Alternaria porri f.sp. dauci, Alternaria carotae, Macrosporium dauci, Macrosporum carotae, Polydesmus exitiosus var. dauci, Sporidesmium exitiosum var. dauci
Worldwide
Widespread
Mexico
2024-12-22
Alternaria dauci can be seed transmitted in carrot and corriandor. It can spread by infected debris, and wind.
Main: carrot. Other: garlic, dill, celery, parsley, parsnip, cabbage, tomato, lettuce, radish, eggplant, and cucumber.
No
No references found indicating seed is a pathway in parsley
Septoria petroselini
fungus
Ascochyta petroselini, Phloeospora petroselini
Asia: Iraq; North America: Canada.
Not known to occur
China
2025-12-20
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.
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.
SEPTPE-3, SEPTPE-4, SEPTPE-5, SEPTPE-6, SEPTPE-8, SEPTPE-9, SEPTPE-10
Agar plating
ARS GRIN
This method has not been validated or standardized.
Chemical, cultural
SEPTPE-2, SEPTPE-4, SEPTPE-7, SEPTPE-9
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.
Koike, S.T., Gladders, P. & Paulus, A.O.,Vegetable Diseases, A Color Handbook 2007, Academic Press New York
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.
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.
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)
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.
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.
Sherf, A.F., MacNab, A.A., 1986. Celery. In: Vegetable Diseases and their Control. Wiley, New York. pp. 157–201.
Farr, DF and Rossman AY 2015. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. http://nt.ars-grin.gov/fungaldatabases/
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
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.
Fusarium oxysporum f. sp. apii
fungus
Fusarium angustum, Fusarium apii, Fusarium bulbigenum, Fusarium orthocera, Fusarium orthoceras var. apii
North America: Canada, USA; South America: Argentina.
CA, NY, TX
China
2024-09-12
The wilt caused by Fusarium oxysporum f. sp. apii is significant, with symptoms like growth retardation, stunting, yellowing and wilting of foliage, root damage with orange-brown vascular tissue in advanced stages, and soft rot on the crown. It is a soilborne pathogen.
celery, parsley
No
FUSAAP-5
No references found indicating seed is a pathway. Reference listed above established parsley as a host.
FUSAAP-5
Halliwell, R.S., and MacSwan, I.C. 1962. Undescribed plant diseases and new hosts recorded in Oregon during 1960-1961. Pl. Dis. Reporter 46: 30.
Stemphylium vesicarium
fungus
Pleospora alli, Helminthosporium vesicarium, Macrosporium alliorum, Mystrosporium alliorum, Macrosporium parasiticum, Stemphylium parasiticum
Worldwide
AZ, CA, FL, MI, MN, NM, NY, TX, WA
-
2024-10-22
Ascospores (P. allii) and conidia (S. vesicarium) are mainly wind-blown or water-dispersed.
Main: onion, garlic, asparagus, soybean, alfalfa, tomato; Other: leek, sunflower, lettuce, radish.
Uncertain
PLEOAL-2
Only found on artificially inoculated seeds. No reports of natural seed contamination.
PLEOAL-2
Blotter incubation
PLEOAL-2
Used Blotter incubation on artificially inoculated seeds only. This method has not been standardized or validated. Natural seed contamination is not reported.
PLEOAL-1, PLEOAL-12, PLEOAL-8
Removal or burial of plant debris through cultivation at the end of the season significantly reduced pathogen spores.
Koike, S. T., O’Neill, N., Wolf, J., Van Berkum, P., and Daugovish, O. 2013. Stemphylium leaf spot of parsley in California caused by Stemphylium vesicarium . Plant Dis. 97:315-322.
Stemphylium vesicarium In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc. In:
Aveling, T.A.S., Snyman, H.G. and Naude, S.P. (1993). Evaluation of seed treatments for reducing Alternaria porri and Stemphylium vesicarium on onion seed. Plant Disease, 77, 1009-1011.
Jakhar SS, Suhag LS, Duhan JC, 1994. Prevalence and incidence of Stemphylium blight of onion (Allium cepa L.) and its management through cultural practices. Crop Research (Hisar), 8(3):562-564 (See CABI)
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