Section 16(2) in The Fertilizer (Control) Order, 1985
(2)Every certificate of manufacture granted in respect of any special mixture of fertilizer's shall be valid for a period of three months from the date of its issue ;Provided that the registering authority may, if it is satisfied that it is necessary so to do extend the said period to such further period or periods as it may deem fit, so however, that the total period or periods so extended shall not exceed six months.
