Willie,
You've lost me. I don't think the key to good fine fescues is an Alkaline or salt-affected soil. In fact, if I remember correctly, fine fescues are not very tolerant of high salts in the soil. I think you need to clarify what you mean by adding salt. We fertilize with salts, and most of the base cations, Ca, Mg, K, and Na, form salts when combined with other elements like Cl. But, I've never heard of adding "salts". From what I know if you want to grow good fescue, you need a temperate climate, sandy, well drained soil, good irrigation water quality or adequate rainfall, and limited traffic (no carts) during times of stress. I also think you need patience as it seems to take a few seasons to get it properly grown in. Dan Lucas, super at the Kingsley Club is someone I would consider an expert on the subject and he could give you better information then I.