Shape is the recognition of geometric configurations usually defined by tonal differences. Shape is seen, for instance, in the contrast between lighter and darker colored soils, more poorly drained vs. better drained soils, etc. A soil survey map of the photographed areas can then be used to identify the different soils present. Interpretation is a skill that improves with training and practice. It also requires confirmation by field evaluation and use of all the information available on that given land area.
Aerial photography can be an effective way to evaluate performance of cropland acreage.
Along with soil surveys, soil testing, field scouting, and good record keeping, it may prove a valuable addition to your crop production management program. A's show change in tone and shape that are related to soil differences. B is an area where weeds are present. A is a tone variation related to decreased stand based on soil differences that have affected crop growth. B is a pattern caused by different hybrids.