What are the signs and symptoms of Rhizoctonia sp.?

Rhizoctonia species are known to cause a range of serious plant diseases, particularly as soil-borne fungal pathogens. The signs and symptoms associated with Rhizoctonia sp. include decayed roots, which result from the fungus attacking and decomposing plant tissues, and stem lesions that can appear as dark, sunken areas on the stems. These lesions can severely affect nutrient uptake and overall plant health. The presence of sunken lesions is a hallmark indication of Rhizoctonia infection, highlighting the pathogen's damaging effects on plant structure.

Other symptoms such as leaf drop, yellowing of leaves, and wilting may occur in various plant diseases but are not specifically associated with Rhizoctonia sp. Similarly, spotted leaves and white mold typically pertain to other fungal infections and situations. Understanding the unique signs, particularly the decayed roots and characteristic stem lesions, is crucial for diagnosing and managing Rhizoctonia infections effectively.