Releasing red oak reproduction using a growing season application of OustThis article is part of a larger document. View the larger document here.
In most cases, newly harvested upland oak stands contain sufficient numbers of red oak stems to form a fully stocked oak stand in the future. Unfortunately, many stands will not reach full stocking of oak due to intense competition from other non-oak reproduction. There are few feasible options to release established oak reproduction from other broadleaf woody or non-woody vegetation. This study assessed the year 1 results of an over-the-top application of the herbicide Oust (0.2 kg/ha) during the growing season to reduce the competitiveness of non-oak species. The first year after treatment, Oust reduced the total height and diameter of non-oak species by about 20 percent without affecting mortality or growth of red oak stems. The application of Oust over the top of actively growing mixed oak stand, while not a labeled use, does show promise as an effective and operationally feasible release treatment.