18. Records to be retained by growers---(1) Every grower must--- (a) Record for each month the following matters in respect of wheat grain or wheat grain product sold by the grower to each wholesale purchaser in New Zealand: (i) The total tonnage of wheat grain sold to the wholesale purchaser in that month: (ii) The total tonnage of wheat grain product sold to the wholesale purchaser in that month, and the total tonnage of wheat grain from which that wheat grain product was derived: (iii) The amount of levy money (if any) deducted by the wholesale purchaser from payments made to the grower in that month; and (b) Record for each month the following matters in respect of wheat grain or wheat grain product sold by the grower to persons who are not wholesale purchasers in New Zealand: (i) The total tonnage of wheat grain sold by the grower to such persons in that month: (ii) The total tonnage of wheat grain product sold to such persons in that month, and the total tonnage of wheat grain from which that wheat grain product was derived: (iii) The amount of levy money (if any) paid directly by the grower to the organisation in that month; and (c) Ensure that the records are retained for at least 2 years after the end of the year in which the relevant month fell. (2) Nothing in this clause requires any person to keep a nil record.