(a) If an acreage has been established by FSA for an area delineated on an aerial photograph or within a GIS, such acreage will be recognized by the county committee as the acreage for the area until such time as the boundaries of such area are changed. When boundaries not visible on the aerial photograph are established from data furnished by the producer, such acreage shall not be recognized as official acreage until an authorized representative of FSA verifies the boundaries.

(b) Measurements of any row crop shall extend beyond the planted area by the larger of 15 inches or one-half the distance between the rows.

(c) The entire acreage of a field or subdivision of a field devoted to a crop shall be considered as devoted to the crop subject to a deduction or adjustment except as otherwise provided in this part.