Anthracnose

Anthracnose is a general term for a variety of diseases that affect plants, especially trees and shrubs. The diseases are caused by several species of the fungi genus Colletotrichum. The term "anthracnose" is derived from the Greek words anthrax, meaning coal, and nose, meaning disease, referring to the dark, coal-like lesions that are a characteristic symptom of the disease.

Symptoms and Diagnosis

The symptoms of anthracnose vary depending on the plant species and the specific fungus involved. Common symptoms include leaf spots, wilting, blight, and dieback. The most characteristic symptom is the presence of dark, sunken lesions on leaves, stems, flowers, or fruits. These lesions may be circular or irregular in shape, and they often have a raised, dark border.

Diagnosis of anthracnose is typically based on the characteristic symptoms and the presence of the fungus. Laboratory tests, such as microscopic examination of the affected plant tissue, may be used to confirm the diagnosis.

Treatment and Control

Control of anthracnose involves a combination of cultural practices and chemical treatments. Cultural practices include proper sanitation, such as removal and disposal of infected plant material, and avoidance of overhead watering, which can spread the fungus. Chemical treatments include the use of fungicides.

Economic Impact

Anthracnose can have a significant economic impact, particularly in the agricultural and horticultural industries. The disease can reduce crop yields, decrease the quality of harvested produce, and increase production costs due to the need for disease management measures.

See Also

• Plant Pathology
• Fungal Diseases
• Agriculture
• Horticulture