2009 North Central Weed Science
Society Proceedings

Herbicide Physiology

Waterhemp Genomics for Herbicide Resistance Research. Chance W. Riggins*, Patrick J. Tranel, Yanhui Peng, and C. Neal Stewart Jr., University of Illinois, Urbana; University of Tennessee, Knoxville. (39)

Introducing Quad-Stack Waterhemp: Populations Containing Individuals Resistant to Four Herbicide Modes of Action. Michael S. Bell*, Patrick J. Tranel, and Aaron G. Hager. University of Illinois, Urbana. (40)

Absorption and Translocation of Glyphosate and Chlorimuron in a Tank Mix. Rachel K. Bethke*, Wesley J. Everman, and Donald Penner, Michigan State University, East Lansing. (41)

Chlorophyll Fluorescence to Assess Glyphosate Response in Herbicide Resistant Giant Ragweed. Renae R. Robertson*, Burkhard Schulz, Stephen C. Weller, Purdue University, West Lafayette, IN. (43)

In Vitro Assay for Assessment of Glyphosate Response Using a Leaf Disk System. Renae R. Robertson, Burkhard Schulz, Stephen C. Weller*, Purdue University, West Lafayette, IN. (44)

Response of a Horseweed Population to Four Different Growth Regulator Herbicides. Ryan S. Henry*, Greg R. Kruger, Vince M. Davis, Stephen C. Weller, and William G. Johnson, Purdue University, West Lafayette, IN. (45)

Persistence and Efficacy of Flumioxazin as Affected by Soil Organic Matter, Clay Content and Soil pH. Calvin F. Glaspie*, Wesley. J. Everman, and Andrew. J. Chomas, Michigan State University, East Lansing. (46)

Common Lambsquarters Response to Glyphosate Across Environments. Evan C. Sivesind*, Chris M. Boerboom, David E. Stoltenberg, and John M. Gaska, University of Wisconsin, Madison. (47)

Preponderance of the Protoporphyrinogen Oxidase Glycine Deletion in Waterhemp Resistant to PPO-Inhibitors. Kate A. Thinglum*, Chance W. Riggins, Patrick J. Tranel, Kevin W. Bradley, and Kassim Al-Khatib, University of Illinois, Urbana; University of Missouri, Columbia; Kansas State University, Manhattan. (96)

Molecular Modeling and Biochemical Effects of a Glycine Deletion in Waterhemp Protoporphyrinogen Oxidase. Patrick J. Tranel*, Franck E. Dayan, Pankaj R. Daga, Stephen O. Duke, Ryan M. Lee, and Robert J. Doerksen, University of Illinois, Urbana; USDA-ARS, University, MS; University of Mississippi, University. (97)

An Alternative to the Glycine Deletion: Why R98L was Selected in Common Ragweed Protoporphyrino-gen Oxidase. Stephanie L. Rousonelos*, Ryan M. Lee, and Patrick J. Tranel, University of Illinois, Urbana. (98)

Analysis of Herbicide Interactions Using Fluorescence Measurements. Rachel K. Bethke*, Donald Penner, William T. Molin, Michigan State University, East Lansing; USDA-ARS, Stoneville, MS. (99)

Glyphosate Resistance in Waterhemp: Inheritance and EPSPS Copy Number. Michael S. Bell*, Patrick J. Tranel, and Chance W. Riggins, University of Illinois, Urbana. (100)

Managing Glyphosate-Resistant Horseweed with Postemergence Applications of Glyphosate and 2,4-D. Greg R. Kruger*, Vince M. Davis, Stephen C. Weller, and William G. Johnson, Purdue University, West Lafayette, IN; University of Illinois, Urbana. (101)

NCWSS Proceedings, Volume 64
© 2009, North Central Weed Science Society, Inc.