Soybeans in Perquimans county were scouted and observed variety AG54XFO had single spot on field affected by dieback, browning and root rot. This a dry site.
Conclusion
The cause of the disease was identified as Pythium sp. and Fusarium sp. Fusarium root rot can result in both pre- and post-emergence damping-off, leading to delayed emergence and stunting of infected seedlings. Root rot symptoms typically manifest as dark brown discoloration, with lesions extending through the vascular tissue to the hypocotyls and are often accompanied by the absence of secondary roots. Pythium species have a very similar survival mechanism and infection process. The overwintering oospores will germinate in saturated soils infecting the plant or producing more infectious spores that move through water to infect healthy plants. Pythium species overwintering oospores will germinate in saturated soils infecting the plant or producing more infectious spores that move through water to infect healthy plants.
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