Set up very good State plant even for Soave back in The Balkans (6)
I believe the answer is:
kosovo
'set up very good state' is the definition.
'kosovo' can be an answer for 'state' (I've seen this before). I'm not sure about the 'set up very good' bit.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for kosovo that I've seen before include "Serbian province, formerly" , "Part of former Yugoslavia" , "Balkan region declared independent in 2008" , "Balkan state declared independent in 2008" , "Land recently emerging" .)