puncture and scar (the skin), as for purposes or tribal identification or rituals
The men in some African tribes scarify their faces.
source: WordNet 3.0
scratch the surface of
Scarify seeds.
source: WordNet 3.0
break up
Scarify soil.
source: WordNet 3.0
To scratch or cut the skin of; esp. (Med.), to make small incisions in, by means of a lancet or scarificator, so as to draw blood from the smaller vessels without opening a large vein.