The white fungus often observed on soybean plants is commonly associated with a destructive disease known as White Mold, also referred to as Sclerotinia stem rot.
Understanding White Mold (Sclerotinia Stem Rot)
Based on available information, including the provided reference, White Mold is a significant fungal disease impacting soybeans.
- White mold (also named Sclerotinia stem rot) is a common and destructive disease that tends to be sporadic across the northern U.S and Canada.
- Although it can be a serious problem in many areas, certain areas are more prone to this disease than others.
This disease gets its name from the fluffy, white fungal growth that appears on infected plant parts. The name "Sclerotinia stem rot" highlights that the primary and most visible symptoms, including the white fungal growth and subsequent rot, are typically found on the stems, particularly around nodes.
While the reference specifically names it "stem rot," fungal pathogens often originate in the soil where they can interact with roots. However, the characteristic white mold and the rotting symptoms described by the disease name are predominantly noted on the above-ground stem tissues. If white fungal growth is visible directly on the roots, it could be related to the initial stages of this disease spreading upwards from the soil, or potentially other soil-borne fungi. Proper diagnosis is always recommended to identify the specific pathogen.
