General Information

Rhizoctonia seedling blight is caused by the fungus Rhizoctonia solani and is one of the most common soilborne diseases of soybean. Common symptoms include red-brown, dry sunken lesions on the seedling hypocotyl, pre- and post-emergence damping-off can also occur resulting in stand reduction. Infection can occur over a wide range of soil conditions and typically does not occur after the seedling stage (V4).

  • Seed treatments with very good to excellent efficacy on Rhizoctonia can minimize stand loss. Links to Seed Treatment Fungicide Efficacy Table – mobile version or pdf
  • Avoid stresses to seedlings such as herbicide injury, poor soil quality/fertility, insect damage, and feeding of soybean cyst nematode (Heterodera glycines)

Rhizoctonia seedling blight

Rhizoctonia seedling blight 2

Rhizoctonia seedling blight (fungus: Rhizoctonia solani)