CuSO stands for copper(II) sulfate, a chemical compound composed of copper, sulfur, and oxygen. Its chemical formula is CuSO4, and it typically appears as a blue crystalline solid. This compound is commonly used in agriculture as a fungicide and herbicide, as well as in various industrial processes. In addition to its agricultural uses, CuSO is also utilized in laboratories for chemical experiments and in the production of other copper compounds. It can be found in some educational settings for demonstrations, such as growing crystals. Proper handling is essential, as it can be harmful if ingested or inhaled.