What herbicides are frequently used in Pennsylvania?
DUPONT OUST® XP is a preemergent and postemergent herbicide. Preemergence treatments control or suppress weeds through root uptake during seed germination. Postemergence herbicide control is through root and foliar translocation. OUST® XP will provide a diminishing residual effect for a period of 9 to 12 months. OUST® XP cannot be applied to surface water or wetland areas that include surface water. Generally, use OUST® XP when ferns are present. OUST® XP has better control on young ferns earlier in the season. OUST® XP is best applied alone when a.) The target species is light to moderate fern cover b.) Significant amounts of advanced regeneration are present. Note however, that OUST® XP can kill a significant percentage of existing desirable regeneration in some instances. OUST® XP will not kill many species of established grasses. Dow Agro Sciences manufactures ACCORD® Concentrate, a postemergent herbicide that controls or suppresses vegetation primarily through foliar uptake. Unlik
