Alternaria dauci
leaf blight of carrot
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
2024-12-22
fungus
Mexico
Main: carrot. Other: garlic, dill, celery, parsley, parsnip, cabbage, tomato, lettuce, radish, eggplant, and cucumber.
ALTEDA
Alternaria dauci can be seed transmitted in carrot and corriandor. It can spread by infected debris, and wind.
4 Known Hosts
Apium graveolens
celery
No
No references found indicating seed is a pathway in celery
2024-12-22 15:34:17
Coriandrum sativum
coriander
Yes
ALTEDA-5, ALTEDA-8, ALTEDA-9, ALTEDA-10
This reference established coriander seed as a potential pathway, though not common
Yes
Seed examination
This method has not been validated. Test methods for carrot seed are commonly applied to coriander seed.
ALTEDA-5
Chemical, cultural
Fungicide treatments have been proven effective. Use resistant varieties, clean seed, and crop rotation.
ALTEDA-5
2024-12-22 16:02:14
Reis, et. al. 2006. Association of Alternaria dauci and A. alternatawith coriander seeds and efficiency of chemical treatments. Horticultura Brasilia 24;107-111.
Mansur, P. S., Silva, A. L., Salcedo, S. S., Barreto, R. W., & Colmán, A. A. (2020). Alternaria dauci causes leaf spots and leaf blight of coriander (Coriandrum sativum) in Brazil. Australasian Plant Disease Notes, 15, 1-5.
Bessadat, N., Hamon, B., Bataille-Simoneau, N., Mabrouk, K., & Simoneau, P. (2019). First report of Alternaria dauci causing leaf blight of coriander (Coriandrum sativum) in Algeria. Plant Disease, 103(9), 2471-2471.
Poudel, B., & Zhang, S. (2018). First report of Alternaria leaf spot of cilantro (Coriandrum sativum) caused by Alternaria dauci in the United States. Plant Disease, 102(4), 822-822.
Daucus carota
carrot
Yes
ALTEDA-1, ALTEDA-2, ALTEDA-4, ALTEDA-7
Seed transmission of this pathogen on carrot is well established and accepted.
Yes
Blotter incubation
This test has been validated by the ISTA and the NSHS
Blotter incubation is the NSHS Standard Method.
ALTEDA-6, ALTEDA-7, ISTA
Thiram soak, Thiram and Iprodione
ALTEDA-1, ALTEDA-2
Alternaria dauci In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Strandberg, JO. 1984. Efficacy of fungicides on persistance of Alternaria dauci on carrot seed. Plant Disease 68:39-42
Strandberg, JO. 1988. Detection of Alternaria dauci on carrot seed. Plant Disease 72;531-534
International Seed Federation Regulated Pest List Database. www.pestlist.worldseed.org. Nyon, Switzerland
Seed Health Testing Method for Alternaria dauci Rb 2.1 National Seed Health System. http://www.seedhealth.org
International Rules for Seed Testing. International Seed Testing Association; www.seedtest.org
Petroselinum crispum
parsley
No
No references found indicating seed is a pathway in parsley
2024-12-22 16:03:06
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