Mar 29, 2016Prowl H20 approved for highbush blueberry
EPA has approved a new supplemental label for use of Prowl H2O for annual grass and broadleaf weed control in highbush blueberry. Prowl H2O provides four to six weeks control of most annual grasses and broadleaves.
Up to two applications may be made with a maximum of 6.3 qt per acre per year. Prowl H2O may be applied over recently transplanted crops. In established blueberry, it should be directed to the soil at the base of the plants.
Prowl H2O is most effective when used in combination with other preemergence herbicides to expand the spectrum of weed control. It does not have postemergence activity.
— Bernard Zandstra, Michigan State University Extension
Source: Michigan State University