The merger of the two articles under Fergana was reasonably successful and acceptable. So the "Farghana" article is no longer needed as an article. 

Do be aware, however, that there is a redirect at "Fargana" (a common spelling found on the Internet) to "Farghana". I will change that redirect to "Fergana." 

But this article ("Farghana") should also be changed to a redirect. Why delete a useful cross reference for a variant spelling? 

 Fred