Sclerotinia sp. It is a pathogenic fungus that lives in soil and plant remains, where it survives in the form of sclerotia, compact, black and hard resistance structures. These sclerotia can persist in the soil for several years until environmental conditions are favorable for their germination. When there is sufficient humidity and moderate temperatures, sclerotia germinate forming apothecia, small cup-shaped structures that release millions of spores into the environment. These spores, carried by wind or water, settle on moist plant tissues and begin infection. The fungus colonizes the superficial tissues and then penetrates the internal tissues, causing necrosis and decay. As it progresses, it produces cottony white mycelium and new sclerotia, restarting the cycle. This process is favored by conditions of high humidity, low ventilation and the presence of senescent or damaged tissues.