Damping-off (Seed and Seedling Rot)
Pythium spp., Rhizoctonia solani, and Fusarium spp.
1 host plant · Oomycete
Last updated
Data Coverage 3 of 6 dimensions
Damping-off (Seed and Seedling Rot) can show up on landscape plants, producing visible damage that ranges from leaf spots and discoloration to branch dieback depending on severity. Early detection gives you the best management options.
Start with sanitation: remove and dispose of affected material as you find it. Thin dense growth to improve air circulation, and redirect irrigation away from foliage. If the condition persists despite cultural adjustments, your local Extension office can help identify the pathogen and recommend targeted treatments.
Quick Reference
Agent Type
oomycete
Causal Agent
Pythium spp., Rhizoctonia solani, and Fusarium spp.
Host Plants
1
Management
Cultural Controls
- Avoid poorly drained soil.
- Use seeds that are properly conditioned.
- Rotate planting beds with nonsusceptible hosts such as small grains to reduce fungal inoculum levels.
- Avoid legume cover crops.
- Keeping beds weed free and fallow with periodic tilling during inter-rotational seasons is even better.
- Designate separate isolation beds for growing nursery stock that arrives from other nurseries.