or pre-e·mer·gent
of or relating to seedlings before they emerge or appear above ground: a preemergent weed-killer.
What is the meaning of post emergence?
: used or occurring in the stage between the emergence of a seedling and the maturity of a crop plant postemergence herbicides postemergence development.
Is emergently a real word?
1. coming into being or notice: an emergent political structure.