PAPERS PRESENTED AT THE ANNUAL MEETING MARCH 11-14, 2019
Grand Hyatt Denver Denver, Colorado
Proceedings Editor: Carl LibbeyRead More
The invasive winter annual grasses medusahead (Taeniatherum caput-medusae) and ventenata (Ventenata dubia) have a relatively long history of spread and impact in the Intermountain West. In 2016, self-sustaining populations of both species were documented in Sheridan County, Wyoming, representing the first known populations of each species in the Great Plains region.Read More
Forest fragmentation can promote non-native plant invasions by increasing invasive plant seed dispersal and resource availability along edges. A study evaluated germination, survival, and growth of three native and three invasive woody plant species in eastern U.S. forests. Generally, invasive species outperformed native species in this study.
Published by Dinon, WW and others. Forests 9(7), 381. 2018Read More
(2019). C. M. Jones and Young, S. Proceedings, Western Society of Weed Science. Pg 3.
Spread of common reed was measured during a 4-year period in Nebraska under various management treatments. Results showed that common reed cover declined with herbicide applications, while grazing maintained consistently low cover. No management approach eliminated common reed which suggests an integration of tools is most effective. Full abstract available at: http://www.wsweedscience.org/wp-content/uploads/WSWS_2019_Proceedings-final.pdf
(2019) Ransom C. V. and H. E. Olsen. In Proceedings, Western Society of Weed Science. Pg 9.
A study was initiated to evaluate the use of drone imagery to detect and map elongated mustard (Brassica elongata), an invasive perennial mustard. Results of the study showed that while drone imagery offers many opportunities for increased detection of invasive species, it does not appear well suited for detection of individual plants, and would most likely be economical only at maximum flight elevations for detection of larger patches of plants. | Read full abstract... http://www.wsweedscience.org/wp-content/uploads/WSWS_2019_Proceedings-final.pdf
The study looked at interactions between an exotic invader, tree-of-heaven (Ailanthus altissima), and coexisting black locust (Robinia pseudoacacia) and management implications. The study occurred in the Mid-Appalachian region of the eastern United States where black locust is native. Results showed that in early successional sites, tree of heaven should be removed to promote long term community succession in areas where black locust is native. Published in Forests 9(4), 221. 2018Read More
A field study was established to evaluate the impact of invasive shrubs on native plants. Results after 7 years showed invasive shrub removal increased plant diversity and allowed passive natural regeneration of native plants that exceeded native cover in the unmanaged, ambient forest.Read More
Strelau et al tested herbicide tolerance in two Bohemian knotweed (Reynoutria × bohemica Chrtek & Chrtkov) populations using rhizome fragments. Results showed there was no difference between populations and knotweed was susceptible to the herbicide treatment. Published in 2018 in Canadian Journal of Plant Science 98(6):1380-1383.
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Spurge-laurel or “Daphne” (Daphne laureola L.) is an invasive, perennial, evergreen shrub introduced to North America as an ornamental. The plant escaped cultivation and is now found on both the east and west coasts of North America. All parts of the shrub are toxic to humans and animals, and dense infestations suppress native vegetation. Strelau et al. 2018. Canadian Journal of Plant Science 98(4):947-958.
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