Suppose a fieldman sees nothing (because the imaging is picking up T stresses) when he gets out to a field location that the imagery shows as stressed. What does he do then?
If the fieldman is using conventional imagery he wouldn’t be able to distinguish between a pre-visible stress at that location and a false positive displayed by the imagery. If the fieldman is using AMS imagery he knows it is a pre-visible stress because AMS imagery has been demonstrated not to display false positives. Being able to rely on the belief that it is pre-visible stress provides economic justification for the fieldman to take plant and soil samples from that location back to the lab to identify the nature of the stress.
