Why are my terrain textures pixelated?

I have tried resizing the texture and changing the size in unity and it doesnt change the texture at all when I apply it this is what it ends up looking like.

https://drive.google.com/file/d/0BwmN1QovGJsqTFl3N3dNRlU5Z1E/edit?usp=sharing

These are my terrain settings

https://drive.google.com/file/d/0BwmN1QovGJsqU0x4cEt0RXJUbEk/edit?usp=sharing

Go to the textures tab, click on your texture, click edit texture. In the dialog change the number 15 to 1,2, or 3.