Abstract: A riding lawn mower that is configured such that an operator can simultaneously mow while selectively apply liquid (such as herbicide) while retaining directional control of the riding lawn mower. This is accomplished by integrating a liquid dispensing control with the mower's steering system, such that the operator does not need to move his control hand from off a control surface of the steering system in order to activate the liquid dispensing control with the same hand. As an example, the liquid dispensing control could be a push button control that is activated by the thumb of the control hand, whilst the fingers and palm of the control hand remain firmly gripped on the control surface of the steering system.