Deals with the influence of several ecophysical factors such as temperature, humidity, pH, light, and chemical factors, including habitat and nutrition, influenced by elements such as carbon, nitrogen, magnesium, sodium, potassium, phosphorus, sulfur, copper, iron, zinc, manganese, etc., on the growth and other physiological systems of fungus. The importance of these factors for the growth of fungus on the varied cultural property of India is explored.