Spring and early summer can be excellent times to control actively growing invasive plants with herbicides. Applying herbicides to the target plant at the optimum growth stage is important to maximize control. The following guidelines provide information on the best application timing and rate to control key invasive plants.Read More
Undesirable or invasive woody vegetation threatens the biology and ecology of prairie grasslands and native woodlands. Removing invading woody species can be accomplished year-long, with fall, winter and early spring herbicide applications, extending your vegetation management efforts.
Catastrophic fire seasons of recent decades prompted a number of agencies and researchers to synthesize and expand upon the knowledge-base related to invasive plant issues following wildfires. The following short list of literature reviews, handbooks, and recently published research provides a starting point for exploring issues and developing management guidelines related to invasive plants following wildfires.Read More
New technology for treating invasive plants in inaccessible areas—Engineering firms specializing in mobile robotic systems have developed multirotor drones (Unmanned Aerial Vehicle- UAV) complete with a lightweight spray system that can be used for a variety of agricultural applications.Read More
Dr. Mark Renz and Tony Summers with the University of Wisconsin conducted a field study in 2014 in McFarland, Wisconsin to determine if the amount of spray volume would impact knotweed control with Milestone at the spot treatment rate of 14 fluid ounces per acre (fl oz/A).Read More
Chris Hitzeman, a farmer and owner of U-Guide South Dakota Pheasant Hunting, gathered the group to discuss the challenges and benefits of restoring wildlife habitat. This diverse collection of individuals shares an interest in expanding and improving habitat for wildlife in the prairie region.Read More
Researchers at Southern Illinois University conducted a study on sericea lespedeza in the Crab Orchard National Wildlife Refuge. The goal of the research was to explore a comprehensive approach to reducing the abundance of sericea lespedeza by: 1) measuring the level of sericea lespedeza control and forb tolerance to varying rates of herbicides applied in spring and summer, 2) comparing effectiveness of summer-applied to spring-applied herbicide treatments, and 3) determining how supplemental seeding of native grasses and forbs enhance restoration success following herbicide treatment.Read More
St. Johnswort, also known as Klamath weed or goatweed, was introduced to the United States as an ornamental and medicinal plan. This taprooted perennial now occurs in all but 2 states and is a challenge to land managers. Read more about the impacts, identification, and management using various methods.Read More
Spray nozzles are an important part of your herbicide application program. There are many different types of nozzles available from manufacturers, and each nozzle can perform differently. Review some guidelines for selecting the proper spray nozzles and operating them effectively.Read More
We asked 13 invasive plant management professionals to provide insight and tips on nozzle selection and maintenance based on their field experience. See what the professionals suggest for type and size of nozzles for backpack and ATV/UTV or truck-mounted sprayers, supplemental equipment, and best practices for calibrating, maintaining, and replacing nozzles.
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