establishing detailed methods for the determination of the ratio of permanent grassland and of the total agricultural area that has to be maintained pursuant to paragraph 2 of this Article;
ag bunú modhanna mionsonraithe chun cóimheas na bhféarthailte buana a chinneadh, mar aon leis an limistéar talmhaíochta iomlán nach mór a choinneáil de bhun mhír 2 den Airteagal seo;