Phytophthora citrophthora is a plant pathogen that affects a wide range of crops. Some synonyms for this destructive fungus-like organism include citrus brown rot, citrus fruit rot, and brown rot of citrus. Other names include rhizome and root rot or foot and root rot. The pathogen can cause significant damage to trees and cause yield losses in orchards. Early detection and proper management practices are crucial in preventing the spread of the disease. Treatments include sanitation, removal of infected plant material, and application of fungicides. Planting resistant cultivars can also lessen the risk of infection.