Effective management for "Alternaria dauci" involves preventing the introduction and development of the disease. One of the best practices to avoid infection is to plant pathogen-free seed or seed treated with hot water at 50 degrees Celsius for twenty minutes. In addition to seed treated with fungicide or hot water, once harvest is complete it is imperative to turn the carrot residue under the soil. The pathogen only survives on infected plant debris, allowing this practice to hasten decomposition of the debris. Crop rotation will allow the debris enough time to decompose. Recommendations vary depending on location, but 2 years is the minimum allowance for rotation. Planting carrots continuously in the same field will result in increased infection. New fields should not be located near previously infected fields in order to prevent contamination through dispersal. Dispersal can occur through multiple avenues such as rain splash, farm equipment, workers, and insects.