Spanish lemon growers are hoping to qualify for Protected Geographical Indication status next year in order to differentiate their fruit from those produced by other Mediterranean countries, according to Angel Garcia, director of Murcia's agricultural authority.
Other regions which aim to qualify for the European Union's PGI mark include Malaga, Alicante and Almeria.
Individual growers have applied for the mark to try and add value as production in southern Europe has boomed. The industry has come under pressure due to planting booms through the 1970s and 1980s.
Spain currently provides the UK with virtually half the annual 50,000 tonnes of fruit, valued at over £21m.
But other countries like Turkey and Argentina have won a share of the market.
The former's production has risen from 390,000 tonnes to 520,000 tonnes in the last three years.