Adjective
postemergence (not comparable)
(of herbicide use) After the emergence of the plants being targeted.
Leaf-feeding insects such as corn borer, fall armyworm and cutworm can be controlled with a postemergence spray of a labeled pyrethroid insecticide. Source: Internet
Bradley applied Liberty and Roundup postemergence in the XtendFlex beans according to the label recommendations. Source: Internet
The operator took them out with a postemergence application, but not before they had time to impact soybeans growing within those random patches. Source: Internet