According to yet another aspect, a method for crop health change monitoring is provided. The method includes acquiring from at least one remote sensing platform a stack of images of a crop growing within a field and acquiring from a remote sensing platform a master image of a crop growing within the field. The method further includes selecting a companion image from the stack of images based on at least one candidate selection criteria wherein the at least one candidate selection criteria comprises a date range parameter and at least one of a minimum threshold for an average vegetation index value in the field, a maximum threshold for an average vegetation index value in the field, and a growth stage parameter. The companion image may be acquired at a first point in time and the master image may be acquired at a second point in time, the first point in time prior to the second point in time. The method further includes computing, using a processor, vegetation indices using the master image and the companion image and determining, using the processor, regions of change within the master image using the vegetation indices. If change within one or more of the regions of change is sufficient to meet defined criteria, the method provides for generating an alert indicative of a change in crop condition of the crop growing within the field between the first point in time and the second point in time. The method further provides for communicating the alert indicative of the change in crop condition over a network to a computing device configured to receive the alert, wherein the alert comprises a change alert image indicative of the change in crop condition of the crop growing within the field between the first point in time and the second point in time. The method further provides for displaying the change alert image indicative of the change in crop condition of the crop growing within the field on a display.