Generating a nutrient use efficiency metric for use in controlling agricultural operations

An agricultural system, comprising:

• a nutrient use efficiency (NUE) system configured to obtain nutrient use data corresponding to a field and yield data corresponding to the field;
• a NUE generator configured to generate an NUE metric value for the field based on the nutrient use data and the yield data;
• a controllable system;
• and
• a control signal generator configured to generate a control signal to control the controllable system based on the NUE metric value.

A computer system, comprising:

• at least one processor;
• and
• a data store storing computer executable instructions which, when executed by at least one processor, cause the at least one processor to perform a method, comprising:
• obtaining nutrient use data corresponding to a field;
• obtaining yield data corresponding to the field;
• generating a set of geo-referenced nutrient use efficiency (NUE) metric values for the field based on the nutrient use data and the yield data;
• and
• generating a control signal in a remote server system to control the remote server system based on the set of geo-referenced NUE metric values.