Crop Protection — Carrot Phdiseases 3
- Foliage - water soaked, dark olive-green lesions associated with collapsed tissues
- Lesions expand rapidly over the entire leaf, petiole, and rosette with infected tissues
- Covered by abundant cottony, white mycelium
- At an advanced stage - affected tissues exhibit a bleached appearance, and occasionally an entire plant may collapse
- Large black sclerotia (2 to 20mm) form externally embedded in the mycelium or internally, within the pith of the petiole
- Source of inoculum - soil - sclerotia, mycelium or ascospores of fungus occu
- Temp - 12.9 to 18.5 ° C
- Storage - Good ventilation
- Use of clean containers, maintenance of temp near 0 ° C
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| infected tissue | Cottony white mycelium | Severly affected carrots | infected carrots |
