However, managing post-emergent weeds can be challenging, and properly timing post-emergence herbicides is a critical way to gain control over costly weed populations. Ask yourself these questions ...

WEST LAFAYETTE, Ind. - Farmers who spot giant ragweed in their fields should apply a post-emergent herbicide before the infestation becomes unmanageable, even if no other weeds have appeared, two ...

FARGO — Quackgrass and crabgrass have done quite ... stores sell products called crabgrass preventers, which are pre-emergent herbicides that are applied before the crabgrass seeds germinate.

Pasadena-based Quali-Pro, a division of Control Solutions Inc., announced the launch of NEGATETM 37WG herbicide ... (ALS), providing fast and complete post-emergent control.