A method of spraying multiple fluids from an agricultural machine (22) is disclosed. The method comprising: supplying a first working fluid from a first source (24, 26) to a first spray nozzle (30, 130, 230)； supplying a second working fluid from a second source (24, 26) to the first spray nozzle (30, 130, 230)； operating at least one valve (70, 78) in the first spray nozzle (30, 130, 230) to control flow of the first working fluid from the first source (24, 26) to one or more outlets (52, 57, 60) of the first spray nozzle (30, 130, 230)； operating the at least one valve (70, 78) in the first spray nozzle (30, 130, 230) to control flow of the second working fluid from the second source (24, 26) to the one or more outlets (52, 57, 60) of the first spray nozzle (30, 130, 230)； selectively spraying the first working fluid through the one or more outlets (52, 57, 60) of the first spray nozzle (30, 130, 230)； and selectively spraying the second working fluid through the one or more outlets (52, 57, 60) of the first spray nozzle (30, 130, 230).
