My responsibilities include research (applied and basic), outreach (Cooperative Extension) and some teaching. When I first came to CSU in 1995 my focus was integrated weed management in row crops. I concentrated on crops like onion, sugar beet, dry bean and potato. This applied research has been supported by the various commodity groups; however, agriculture along the Colorado’s Front Range is being displaced by an increasing population. Many communities are trying to preserve the quality of life in Colorado by purchasing farmland to establish open space and natural areas. These areas are highly disturbed and susceptible to invasion by numerous weed species; therefore, over the past three years I have been involved in more research dealing with invasive species management and adaptive strategies to establish desirable plant communities. The goal of this research is to establish sustainable plant communities that can resist re-invasion. Herbicides are an important management tool, so we also focus on herbicide fate in the environment and non-target impacts.
Courses I Teach
Takano H, Patterson EL, Nissen SJ, Dayan FE, Gaines TA. 2019. Predicting herbicide movement across semi-permeable membranes using three phase partitioning. Pest Biochem Physiol. (accepted May, 2019)
Westra EP, Nissen SJ, Getts TJ, Westra P, Gaines TA. 2019. Survey reveals frequency of multiple resistance to glyphosate and dicamba in kochia (Bassia scoparia). Weed Tech. (accepted April, 2019)
Melo MSC, Rocha, LJFN, Brunharo CACG, Nicoli M, Tornisiello VL, Nissen SJ, Christoffoleti PJ. 2019. Sourgrass resistance mechanisms to the herbicide glyphosate. Planta Daninha 37:e019185746
Ortiz MF, Nissen SJ, Gray CJ (2019). Endothall behavior in Myriophyllum spicatum and Hydrilla verticillata. Pest Manag Sci. doi: 10.1002/ps.5404
Clark SL, Sebastian DJ, Nissen SJ, Sebastian JR (2019) Effect of indaziflam on native species in natural areas and rangeland. Invasive Plant Sci. 12: 60-67
More publications: Google Scholar