Systems and methods for implementing a trial in one or more fields is provided. According to an embodiment, an agricultural intelligence computer system identifies a plurality of sets of adjacent locations in a field and computes a difference value between the locations. The system uses the different values for the plurality of sets of adjacent locations to determine a short length variability score. The system may then use the short length variability score to identify fields for implementing a trial and/or locations within a field to implement the trial. In embodiments, the system uses a grid overlay which the system orients based on header information received from agricultural implements. In embodiments, the system alters the grid overlay to increase a number of testing locations on the agricultural field and/or within different management zones.
