Biuret is commonly used as a nitrogen source in fertilizers, providing essential nutrients to plants for healthy growth due to its slow-release properties. It is also utilized in the production of animal feed, where it serves as a non-protein nitrogen (NPN) supplement to enhance the apparent protein content in livestock diets. In urea fertilizer production, biuret levels are monitored as an impurity to ensure product quality and plant safety, as high concentrations can be toxic. Additionally, biuret is the namesake of the biuret test in biochemical research, a method that uses an alkaline copper sulfate reagent to detect peptide bonds in proteins, producing a violet color; the test is named after biuret due to its similar reaction. Its stability makes it suitable for various agricultural and industrial applications.