Potato fungus refers to any type of fungus that infects potato plants, potentially damaging the plants tissue, affecting the growth, or causing diseases. Different types of fungi cause various fungal diseases in potatoes such as late blight, early blight, dry rot, and black scurf. These fungi may attack the plant stems, leaves, roots, or tubers, compromising the plants health and, in severe cases, leading to the loss of the entire crop.