To kill anything off pour either a Sodium Chlorate solution on the ground at the base of the plant, stronger the better, no idea where you will get it in Turkey though, in UK it comes in small plastic pots, easily fits in a suitcase. OR try pouring some diesel, again a guarenteed winner, but less envoronmentally acceptable. Both of these methods will steralise the ground though, nothing will grow there, in real terms, for 2 - 5 years, so gravel it and put a large pot with a plant there. But you may need to be this severe, vines have been known to put roots down in excess on 10 m!