Damping-off diseases

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A.A. Seif & A.M. Varela, icipe
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Minor Pest Title

Damping-off diseases

Minor Pest Description

Cotton seedlings are subject to attack by several fungal and bacterial diseases. These include the anthracnose fungus (C. gossypii), Ascochyta blight (A. gossypii), wilt fungus (F. o. f.sp. vasinfectum), bacterial blight (X. a. pv. malvacearum), Pythium spp. and Rhizoctonia solani.


Pythium spp. are particularly serious where soil temperatures are low and wet weather prevails at planting.

Rhizoctonia solani causes sore shin disease of cotton seedlings. Attacked seedlings develop dark to reddish-brown cankers on the stems near the soil line. The cankers encircle the stems or penetrate so deeply that the plants fall over and die.


Minor Pest What to do.
  • Use disease-free seeds.
  • Avoid planting during cold, wet weather.
Minor Pest Position
Minor Pest Firstcontent
Pest Type
Common names; Wilt, Damping-off, Seedling blight, Root rot, Rhizoctonia damping-off, Rhizoctonia
Host Plants