Eremascus albus

Eremascus albus is a specialized microscopic fungus belonging to the Ascomycota division. While it exists naturally in the environment, it is primarily recognized by agronomists as a dangerous storage pathogen that affects harvested crops, particularly cereals, under improper storage conditions.

The host range of Eremascus albus primarily includes stored cereals, flour, and cereal-based products. It is considered a serious problem in grain elevators and silos, where it thrives on seeds that have not been adequately dried, leading to substantial economic losses for producers and distributors.

Symptoms of infestation are typically characterized by the appearance of a white or grayish-white cottony growth on the grain surface. As the infection progresses, the fungal mycelium may form a dense, leathery mat. Heavily infected grain displays a distinct musty odor, darkening of the kernel coat, and a noticeable reduction in germination energy and nutritional value.

The development of this fungus is strictly regulated by environmental factors, particularly moisture and temperature. Eremascus albus thrives in environments where relative humidity exceeds 75% and temperatures remain between 20°C and 30°C. Its ability to grow in lower moisture conditions than some other common molds makes it a persistent threat in challenging storage environments.

Effective management of Eremascus albus requires a proactive approach centered on physical control and environmental monitoring. Preventive strategies include the following:

• Strict adherence to grain drying protocols to ensure moisture content remains below 14%.
• Utilization of aeration systems to maintain uniform temperature throughout the grain bulk.
• Frequent inspection of stored grain to identify "hot spots" of potential infection.
• Routine sanitation and disinfection of storage facilities and equipment before and after the harvest season.