In keeping with the Reforestation Program’s mission of providing pertinent information to forestry professionals, we began a new herbicide field trial with Transline® (clopyralid). Many foresters and landowners are interested in applying herbicides after a site has been planted to inhibit weed competition. However, in the case of Transline®, not all species are referenced on the label. In addition, the varying rates prescribed may impact species differently. All of this can create a challenge for a forester or landowner when managing competition within the planting. Continue reading “Transline® herbicide trial begins” →

Over the course of several years of monitoring new plantings on landowner properties throughout the state, reforestation staff encountered a wide range of herbicide prescriptions, with varying results. Often, staff encountered trees showing a high degree of stress, or even mortality, which appeared to be linked to the herbicide application.  The decision was made to test some herbicide treatments in our nursery to see how stock reacted to the chemical at various rates and application timings, under more controlled conditions than what is typically found on outplanted stock.  We selected Dupont Oust XP (Sulfometuron Methyl) as our test chemical, since it is the most widely used pre-emergent herbicide currently in use in Wisconsin.

Continue reading “Herbicide testing in nursery environment” →