ZonePlant

Disease on crop

fungal

Septoria Leaf Spot on tomato

Septoria lycopersici

Fungal disease that defoliates tomato from the bottom up. Doesn't directly affect fruit but reduces yield through loss of leaf area.

Disease
Septoria Leaf Spot
Pathogen type
Fungal
Crop
Tomato
Scientific name
Septoria lycopersici

Septoria Leaf Spot on tomato

Detailed guidance for this section is being prepared. Check back soon.

Symptoms on tomato

  • Small dark-brown circular spots with light gray centers on lower leaves
  • Tiny black fruiting bodies visible in lesion centers with a hand lens
  • Yellowing and dropping of lower foliage progressing up the plant

IPM controls

  • Mulch to prevent soil splash
  • Remove infected lower leaves promptly
  • Stake or cage and prune for airflow
  • Crop rotation away from tomato beds for 2-3 years
  • Sanitation: destroy infected residue at season end (do not compost)

Other crops affected by septoria leaf spot

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