In various embodiments, the present disclosure provides a method of generating crop biometric information in field conditions that includes scanning top surfaces of various plant crown structures of a plurality of plants in one or more rows of plants within a field to collect scan data of the crown structures. Additionally, the method includes converting the scan data into a high spatial resolution 3-dimensional field contour map that illustrates an aggregate 3-dimensional field contour of the scanned plants. The method further includes extracting, from the high spatial resolution 3-dimensional field contour map, biometric information relating to the plants in each of one or more selected rows of the scanned rows of plants.
