Burry meteorites under the roots of plants

Burry meteorites under soil, under the roots of plants.  Put lifeforms that you need to kill, but don't know how to kill, under the roots of plants.  They may have come from meteorites, so they should be able to be killed the same way lifeforms in meteorites are killed, under the roots of plants.

Antarctic meteorites should put back and let go slowly into the ocean, as they naturally would.