The phrase "application rate" refers to the quantity of a particular substance or product applied to a specific area. Some synonyms for application rate include dosage, concentration, coverage, spread, deployment, and allocation. Dose connotes a specific and measured quantity of a substance given for a specific purpose. Concentration emphasizes the strength of the substance being applied. Coverage refers to how much ground an application covers. Spread suggests a distribution of a substance over a wider area. Deployment emphasizes the strategic planning of how to apply a substance. Allocation refers to the placement of a substance in a particular area. Using these synonyms can help to add varied and nuanced meaning to discussions of application rates in various contexts.