N.Y. Comp. Codes R. & Regs. tit. 1, § 97.3 – Field inspection.

(a) An inspector of the certifying agency shall make at least one field inspection of each field entered for certification.
(b) Field inspection shall be made after the crop is fully headed when varietal or crop mixtures can be determined.
(c) The inspector shall cross the field sufficiently to evaluate accurately the factors affecting the eligibility for certification.