SCHEDULE 1Growing crop certificates
PART 2Pre-basic seed potatoes
5
No growing crop certificate may be issued containing a statement that seed potatoes are capable of being marketed as pre-basic seed potatoes of F1GB grade PBTC unless the authorised officer is satisfied that the immediately succeeding crop produced from the seed potatoes is not likely to contain—
a
plants of a different variety; or
b
plants affected by mild or severe virus.