export a model with part of it's texture transparent (using alpha clip) from Blender to Unity?

okay, so i have a dress model that is suposed to be deteriorated, like burned, but only in specific parts. To avoid a lot of polygons, we decided to make the ripped off parts transparent, so give the looks we need to. But, i need to know how to put in in unity, anyone can help?

Built in Standard shader should have everything you need. It has Rendering Mode rollout twith one of transparency options being similar to Alpha Clip. One important detail is that Unity expects transparency mask to be in an alpha channel of color (Albedo) texture instead of separate texture. This is done to conserve video memory