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Keywords: Application accuracy, Fertilizer, Pneumatic applicators, Precision agriculture, Site-specific management, Spinner-disc spreaders, Variable-rate technology

1 Purpose and Scope

1.1 The purpose of this Standard is to provide a method to evaluate application accuracy of granular materials applied using variable-rate application systems including spinner-disc broadcast spreaders or similar equipment that distribute fertilizers. Specifically, this standard will facilitate the collection and reporting of map-based application accuracy of both single and multiple granular products.

1.2 Testing of equipment commonly used to support site-specific management, machinery guidance, and other precision agriculture practices forms the basic scope of this Standard.