Potassium bicarbonate is widely used in agriculture as a fungicide to control powdery mildew and other fungal diseases on crops. It is an effective and eco-friendly alternative to chemical pesticides. In the food industry, it serves as a leavening agent in baking, helping dough rise by producing carbon dioxide when heated. It is also used as a pH regulator and stabilizer in various food products. Additionally, it is employed in fire extinguishers as a component of dry chemical fire suppressants, particularly for Class B and C fires. In medicine, it is sometimes used as an antacid to neutralize stomach acid and relieve heartburn or indigestion. Its versatility makes it valuable across multiple industries.