Coffee anthracnose

The disease is caused by the pathogenic fungus Colletotrichum panamense, which is a significant threat to coffee cultivation. This organism is classified within the Colletotrichum genus, known for causing widespread anthracnose diseases across various tropical agricultural crops.

The primary host for Colletotrichum panamense is the coffee plant (Coffea arabica). The pathogen affects leaves, stems, and berries, disrupting the physiological processes of the plant and directly impacting the quantity and quality of the final coffee production.

Symptoms include the appearance of dark, sunken lesions on the leaves and stems. In humid environments, these lesions often develop acervuli, which are tiny, spore-producing structures that appear as small, moist, pinkish or orange masses on the surface of the infected plant tissue.

Disease development is heavily influenced by environmental conditions, particularly high humidity and warm temperatures. Rain splash and high moisture levels are critical factors that facilitate the dispersal of fungal spores from infected debris to healthy plant organs during the growing season.

• Pruning and removing infected branches to reduce inoculum load.
• Improving plantation ventilation to lower humidity levels.
• Applying prophylactic fungicide treatments during high-risk weather.
• Selecting disease-resistant coffee varieties where available.
• Maintaining proper plant nutrition to strengthen natural resistance.

The economic impact of Colletotrichum panamense can be severe, as it leads to leaf abscission, dieback of fruiting branches, and berry rot. Effective management strategies are essential for maintaining yield stability and ensuring the profitability of coffee-producing estates worldwide.