Commission Regulation (EC) No 1045/2001 of 30 May 2001 deferring the final date for sowing certain arable crops in certain regions in the 2001/02 marketing year and derogating from Regulation (EC) No 2316/1999 laying down detailed rules for the application of Council Regulation (EC) No 1251/1999 establishing a support system for producers of certain arable crops