15.—(1) A crop from which basic seed is to be produced shall be examined by an official UK field inspection to determine whether the crop meets the conditions set out in this Schedule and in Part I of Schedule 4.
(2) A crop from which CS, C1 or C2 seed is to be produced shall be examined by means of an official UK field inspection or a UK field inspection carried out under official supervision to determine whether the crop meets the conditions set out in this Schedule and in Part I of Schedule 4.
(3) Field inspections shall be carried out at a time when the condition and stage of development of the crop permit an adequate examination.
(4) A crop from which HVS level basic, C1 or C2 seed is to be produced shall not be more than one third lodged at the time of inspection.
(5) Subject to sub-paragraphs (6) and (7), at least one field inspection of the crop shall be carried out.
(6) Subject to sub-paragraph (7), at least three field inspections shall be carried out in the case of an inbred line or hybrid of maize.
(7) In the case of maize, where the crop to be examined follows a maize crop in either the preceding or current year, at least one special field inspection shall be carried out to check that the condition contained in paragraph 1 has been complied with.