Mould is an example of a fungal disease that affects stored grains. It is a type of fungi that grows on the surface of grains, consuming nutrients from the grain and producing spores that can spread the infection to nearby grains. Mould growth is usually a sign of high moisture levels in the storage area or damage to the grain, and can lead to spoilage and decreased nutritional value of the grains. Control measures for mould growth include maintaining proper storage conditions such as low moisture and temperature levels, regular inspection of stored grains and treatment with fungicides.