Rhizoctonia solani

  • Rhizoctonia Solani is the most common cause of seedling blight
  • Prolonged exposure to cold, very wet or dry soil, deep seeding and short crop rotations encourage infection
  • Seeds fail to germinate and become soft and pulpy or they germinate and become soft and pulpy or they germinate but seedlings fail to emerge
  • Seedling roots decay and the rot extends up into hypocotyl and stem at the soil surface, causing the seedling to topple over
  • Typical wirestem appearance
  • In dry conditions, shriveled stem may persist
  • Under wet condition, the seedling is destroyed in a few days
  • Seedling blight may be scattered throughout fields or in patches, particularly on knolls or in depressions
  • By the two to four-leaf stage, seedlins can withstand light to moderate infection and regenerate new rootlets

Generally causes poor stand establishment

Scouting:

  • Just after emergence, look for areas of fields that exhibit severe stand reduction and scout those areas for symptoms of blight or damping off

Control:

  • Seed shallowly in firmly packed soil
  • Sow into warm soils with adequate fertility
  • Prosper seed treatment will protect against Rhizoctonia Solani
Products that control

Crops

  • Canola
  • Dry Beans
  • Flax
  • Lentils
  • Peas
  • Snap Beans
  • Soybeans
Visit the Bayer CropScience Compendium site for more details »
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