What pathogens are associated with cavity spot in carrots?

Cavity spot in carrots is primarily associated with Pythium sulcatum and P. violae. These pathogens thrive in moist soil conditions and can cause significant damage to carrot crops by leading to the development of characteristic cavities below the soil surface. This results in a reduction in marketability and can increase susceptibility to secondary infections.

Pythium spp. are known for their role in damping-off diseases and root rot, which can further complicate crop health. These pathogens affect the roots and the lower sections of the carrot, creating the cavity spots that are symptomatic of this disease. Understanding these specific pathogens allows for targeted management practices, such as appropriate soil moisture management and crop rotation, to mitigate their impact on carrot production.

Other options listed are associated with different diseases or conditions affecting other plants and do not directly relate to cavity spot in carrots. This specificity helps clarify the importance of proper identification of pathogens in crop management.