Recommendations for managing crown vetch with herbicide.Read More
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
2010. Proceedings Western Society of Weed Science. V63: p43.
Byron Sleugh, Mary Halstvedt, Chad Cummings, Vanelle Peterson, Dow AgroSciences, Indianapolis, IN; and Robert G. Wilson, University of Nebraska Panhandle Research Center, Scottsbluff, NE.
Chemical control of saltcedar (Tamarix spp.) and Russian olive (Elaeagnus angustifolia L.) has had varying degrees of success. Some non-selective herbicides cause unacceptable injury to desirable species or do not control invasive species under the canopy. Aminopyralid (Milestone®) controls many invasive herbaceous broadleaf weeds, but control of saltcedar and Russian olive has not been fully explored. Experiments were established to assess the efficacy of various aminopyralid containing products and aminopyralid and triclopyr (Garlon 3A or Garlon 4 Ultra) mixtures on these plants. Treatments included triclopyr amine and triclopyr ester at various rates plus aminopyralid at 120 g ae/ha (0.l1 lbs ae/acre) and Milestone® VM Plus at 9.6 L/ha (1 gal/acre) [triclopyr amine at 1.12 kg ae/ha (1 lb ae/acre) and aminopyralid 120 g ae/ha (0.11 lb ae/acre)]. At 326 days after application, 3.3 kg ae /ha (3 lbs ae/acre) triclopyr ester plus 120 g ae/ha aminopyralid provided excellent control (98%) of Russian olive and saltcedar (94%), similar to efficacy of imazapyr at 1.12 kg ae/ha (1 lb ae/acre). Triclopyr + aminopyralid treatments caused little to no grass injury (0 to 5%) compared to the imazapyr treatments (50 to 85%). Milestone® VM Plus at 9.6 L/ha provided 91% control of saltcedar and no grass injury. Adding aminopyralid to either the triclopyr amine or triclopyr ester was synergistic and provided increased control of Russian olive and saltcedar thus providing another option for controlling these species without significant injury to desirable understory vegetation.
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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
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.
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.
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
Fall is an excellent time to control invasive weeds with Milestone. Late summer and fall rains in many areas of the Central Plains and the West in 2010 will provide land managers with a good opportunity to extend their application season.Read More
Saltcedar (Tamarix ramosissima, T. pentandra, T. chinensis, and T. parviflora) and Russian olive (Elaeagnus angustifolia L.) are rapid growing, non-native deciduous trees that were introduced into the United States for erosion control (saltcedar), windbreaks (Russian olive) or as ornamental plantings.Read More