Ramularia betícola is a phytopathogenic fungus that mainly affects beets. This fungus produces conidial spores that are spread through wind, water, and contaminated tools. Spore germination occurs under conditions of high humidity and moderate temperatures. Once the spores germinate, the fungus penetrates the plant tissues, mainly through stomata and wounds. Inside the plant, the fungus develops intercellular mycelium and produces new spores in infected tissues, thus perpetuating its spread and the infection cycle. The fungus can survive in the remains of infected plants and in the soil, which facilitates its persistence and reappearance in subsequent crops.