Russian knapweed (Acroptilon repens) is a creeping perennial that spreads through seed and vegetative root buds. Once established, infestations expand primarily by adventitious roots.Read More
This article summarizes field studies established on meadow hawkweed at two sites near Santa, Idaho by Dr. Tim Prather, University of Idaho. Selective herbicides such as Milestone® specialty herbicide have shown to control hawkweeds and release grasses and desirable native forbs. Strategically timed herbicide applications can improve hawkweed control and promote establishment and maintenance of grass cover.
Absinth wormwood (Artemisia absinthium L.) is a perennial broadleaf plant introduced as an ornamental into North America from Europe in 1841. The plant escaped cultivation and is now widely distributed in the U.S. and Canada. This article describes the biology, ecology, identification, and management of absinth wormwood in natural areas.Read More
All-terrain vehicles (ATVs) with small-capacity spray tanks and boomless nozzle systems are well adapted to uneven terrain and are thought to have potential to spray 25 to 30-foot swaths using a centrally located single or dual nozzle arrangement. This article summarizes field studies by Robert Wolf and others at Kansas State University to evaluate the effectiveness of spray nozzles on ATVs.
Native tallgrass prairies are diverse ecosystems that evolved with periodic disturbances such as fire and grazing pressure and are dominated by species that include big bluestem (Andropogon gerardii Vitman), Indiangrass [Sorghastrum nutans(L.) Nash], and switchgrass (Panicum virgatum L.).Read More
Studies were initiated by the University of Hawai’i Cooperative Extension Service Invasive Weed Management Program to find a method to improve individual plant herbicide application techniques and determine efficacy of various herbicides applied as undiluted formulations.
Guy B. Kyser, Arthur W. Hazebrook and Joe DiTomaso (2013-in press) Invasive Plant Science and Management (DOI: 10.1614/IPSM-D-12-00094.1, http://pinnacle.allenpress.com/doi/abs/10.1614/IPSM-D-12-00094.1)Read More
Herbicides play an important role in integrated management of yellow starthistle and can be used alone or in combination with other techniques such as timely mowing, grazing, burning, or use of biological control insects.
by Mark Renz, Mike Moechnig, and Mary Halstvedt
Efforts to restore or rehabilitate mixed wildflower (forb)-grass prairie landscapes in the Midwestern United States are often compromised by the presence of invasive plants. While herbicides provide effective control of invasive plants, they are often not used due to concern that herbicide residues may persist in the soil and impact establishment of wildflowers. Researchers in Wisconsin and South Dakota examined the response of common native wildflower species seeded in the fall or spring following treatments with Milestone® and Transline® herbicides. The results of this research provide promise for land managers balancing invasive plant control and restoring desirable prairie habitat.Read More
The effectiveness of spring-applied Milestone® specialty herbicide in controlling medusahead seed production was tested in northern California. Read about the effectiveness of controlling this invasive grass with selective herbicides.Read More
Japanese stiltgrass is an introduced annual grass that has invaded forestlands throughout much of the eastern half of United States. Learn more about how Milestone can be used to selectively manage stiltgrass in natural areas.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
A research project was initiated on a 10,670-acre ranch near Cimmarron, Colorado to develop sustainable management strategies for musk and Canada thistle. Objectives of the study were three-fold: 1) Investigate invasive thistle distribution through geospatial analysis; 2) determine effects of musk thistle management on forage quality and native plant diversity; and 3) develop a sustainable invasive plant management plan for the ranch.Read More