How to recognize and combat gray rot in carrots

Botrytis cinerea is a necrotrophic fungus that infects a wide range of plants, including carrots. This pathogen is known for its ability to produce conidial spores that are easily spread through air, water, and contact with contaminated materials. The spores germinate in the presence of humidity and favorable temperatures, producing mycelium that invades the plant tissues. Botrytis cinerea survives on infected plant debris and in soil, and can enter a state of dormancy during unfavorable conditions, resuming activity when conditions improve. In addition to conidial spores, the fungus can also produce sclerotia, resistant structures that allow it to survive for long periods in the soil. The infection usually begins in damaged or senescent tissues, spreading rapidly to healthy parts of the plant under conditions of high humidity and moderate temperatures.