Cheers twice you have said Turkey has applied to join the Euro. It has not, it has applied to join the EU. I think you are getting the European Union muddled up with the currency.
There has been a deal of criticism of Turkey and the way she uses protectionism. The EU, USA and China are no different in using tariffs to protect their own farmers and industries.
The massive expansion of the EU has resulted in the icing having to be spread more thinly over countries and the massive influx of money that countries like Ireland, Greece, Spain and Portugal saw when they joined the EU will not be available to Turkey if she joins.
Turkey exports farm produce to earn hard currency.Turkey has been and could still be in recession and the latest figures from the Turkish central bank shows that inflation has fallen but the economy also contracted.