Instead of putting it into my blender, and spraying it out into the field with a fertilizer-bottle attached to my garden hose...
Ive not heard of this practrice, unusual!

Recently, I saw a Mythbusters show covering the proverb about a rolling stone not gathering moss. To get the moss to grow they mixed it with buttermilk in a blender. (or was it yogurt?)

I have successfully grown moss by 'blending' with a hand blender in rain water (not so with yoghurt/buttermilk - too alkali) Moss will grow from a leaf fragment in ideal conditions so cutting it with a blender will help to distribute the fragments and cover a larger area.
Moss only grows when wet, so it will grow faster if you keep it from drying up. Use your sprayer with rain water (more acidic than tap water - moss likes slightly acidic conditions) but any water will help.