(I think) You'd have to make a proper boundary for each part of the field. So that the corn has its own boundary and beans have their own, not one big field boundary. Archive that one if it's there. 

Once you have 2 good smaller boundaries, delete the data from Field Analyzer you are showing there. Check in your import options in the settings to make sure Field Finder (?) is turned on. This will put the data into your field boundaries when it comes back in. 

To get it back in, go to the Files page and checkmark and reprocess the files for that field or data.