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Online tool for GR horseweed (Conyza canadensis) gene flow

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  131594252,  2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: @2013
Authors:   Junming Wang, Haiyan Huang, Rongjian Ye, Yanhui Peng, Charles Neal Stewart, David R. Miller, Ted W. Sammis
Keywords:   Horseweed gene flow simulation model Lagrangian pollen seed dispersion deposition

Abstract. Horseweed (Conyza canadensis) with evolved glyphosate resistance (GR) has become an especially problematic weed in crop production across the United States. This paper reports on the framework development of an Internet decision tool that can be used by regulatory agencies, industries, farmers, and the public. It estimates the potential gene flow from GR horseweed and can offer guidelines for the prevention of gene flow under different meteorological and environmental conditions. The online tool is based on the Lagrangian dispersion model Hysplit4.0 which simulates local and regional dispersion, deposition, and outcrossing of horseweed pollen and seeds. The tool has user-friendly “Googlemap” interfaces.

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