Af indlysende årsager: for at landbrugerne kan forberede deres tilsåning, er det nødvendigt, at de senest den 30. juni hvert år kender braklægningsprocenten for det følgende høstår.
For obvious reasons, so that farmers can decide how to prepare their soil for sowing, they must know by 30 June each year the set-aside rate for the following year.