Septoria leaf spot of celery
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| Septoria | |
|---|---|
| Septoria leaf spot of celery | |
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| Septoria leaf spot of celery | |
| Scientific Classification | |
| Kingdom: | Fungi |
| Phylum: | Ascomycota |
| Class: | Dothideomycetes |
| Subclass: | Dothideomycetidae |
| Order: | Capnodiales |
| Family: | Mycosphaerellaceae |
| Genus: | Septoria |
| Species: | Septoria apiicola |
| Synonyms | |
| Late blight of celery Septoria leaf spot |
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Spetoria leaf spot of celery (Septoria apiicola) is a blight of celery, which is extremely susceptible to the disease during extended periods of leaf wetness.[1]
Symptoms[edit | edit source]
Septoria apiicola can attack any part of the plant above ground. As outer leaves and stalks turn dark and wither, the entire field may look scorched.[2]
Prevention[edit | edit source]
Biological[edit | edit source]
This fungi often are introduced on 1-year-old seed. For this reason, use seed 2 years old or older. Soak newer seed at 47°C (118°F) for 30 minutes; then dry at room temperature.[2]
Chemical[edit | edit source]
Spray plants with one of the following fungicides on a 7-day schedule in the field, and if the label permits, at shorter intervals in seedbeds.[2]
- Quadris 9.2-15.4 fl oz/A, 7-14 day intervals (0 days-PHI). Follow label recommendations for fungicide resistance management.
- Quadris Opti 2.4-3.7 pt/A (7 days-PHI).
- Bravo Ultrex 0.9-1.4 lb/A, 3-5 day spray schedule or 1.8-2.7 lb/A, 7-day schedule (7 days-PHI).
- Bravo Weather Stik 6F 1-1.5 pt/A, 3-5 day spray schedule or 2-3 pt/A, 7-day schedule (7 days-PHI).
- Equus 720 2-3 pt/A (7 days-PHI).
- Tilt 4 oz/A (14 days-PHI).
- Quilt 14 fl oz/A on a 7-10 day schedule (14 days-PHI).
- Kocide 3000 0.75 lb/A (0 days-PHI). Apply at 5-7 day intervals as soon as plants are established in the field.
- Cuprofix Ultra 40 D 1.25 lb/A. Apply at 5-7 day intervals when conditions favor disease.
- Tanos 8.0-10.0 oz/A (1 day-PHI)
Examples[edit | edit source]
References[edit | edit source]
- ↑ Berger, R.D. (1970). Epiphytology of celery late blight. Florida State Hort.Soc.Proc.83:208-212.
- ↑ a b c Phillips, P.A. Late Blight of Celery (Septoria apiicola): Timing Fungicides Based on its Biology as Predicted by In-Field Weather Stations. Cal/EPA, Department of Pesticide Regulation, Pest Management Analysis and Planning Program, and the U.S. Environmental Protection Agency.
