Leafy Spurge Symposium
Bozeman, Montana; July 26-29, 1994

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Abstracts by Subject:
drawn LS plant: artist Rachell Provost '94

BASIC

  1. How Do Weeds Affect Us All?.  K.G. Beck, Associate Professor of Weed Science, Colorado State University, Ft. Collins, Colorado.
     
  2. A Model for the Regulation of Crown and Root Buds of Leafy Spurge.  Donald S. Galitz, NDSU, Fargo, ND.
     
  3. Leafy Spurge and the GPAC-14 Leafy Spurge Task Force: An Historical Perspective.  Barbra Mullin, Weed Specialis, Montana Department of Agriculture, Helena, MT.
     
  4. Habitat Analyses of Spurge Species from Europe Using Multivariate Techniques.  Robert M. Nowierski and Zheng Zeng, Department of Entomology, Montana State University, Bozeman, MT 59717
     
BIOLOGICAL CONTROL
  1. Biological Control of Leafy Spurge with the Use of Pathogens.  Tony Caesar
     
  2. Insect Association on Euphorbia characias L. in Western Europe, a Plant Closely Related to Leafy Spurge.  G. Campobasso, M. Cristofaro, R. Sobhian, F. Sale, G. Terragitti, and L. Knutson.
     
  3. Status of Biocontrol Research Projects in North Dakota with Special Reference to Aphthona spp. and the Gall Midge, Spurgia esula.  Robert B. Carlson, Jeffery Nelson and Donald Mundal, North Dakota State University.
     
  4. Entomophauna Associated with Leafy Spurge: Field and Laboratory Studies on Competition Behavior Between Two Defoliator Moths (Simyra dentinosa Freyer and Oxicesta geographica F.) and Two Gall Midges (Spurgia esulae Gagne and Dasineura sp. nr. capsulae Kieffer). M. Cristofaro, A.C. Pastorino, V. Di Ilio, G. Campobasso, and L. Knutson.
     
  5. Phenology of Leafy Spurge Biocontrol Agents.  Rich Hansen, USDA-APHIS, Forestry Sciences Lab, Montana State Univ., Bozeman, MT 59717-0278.
     
  6. Root-Associated Microorganisms of Leafy Spurge as Potential Biocontrol Agents.  R.J. Kremer, T. Souissi, and L. Stanley; USDA-ARS Cropping Systems and Water Quality Unit and Department of Plant Science, University of Missouri, Columbia, MO 65211.
     
  7. An Overview of Biological Control of Leafy Spurge in Alberta.  Alec McClay, Alberta Environmental Centre, Bag 4000, Vegreville, Alberta, Canada T9C lT4.
     
  8. Adult Emergence Counts from Soil Samples and Laboratory Mating Crosses of Aphthona lacertosa and Aphthona czwalinae.  Donald Mundal and Robert Carlson, North Dakota State University.
     
  9. Molecular Approaches to Determine Genetic Diversity of Weedy Species and Their Application to Biocontrol.  Scott J. Nissen, Martha L. Rowe, Don J. Lee, Department of Agronomy and Robert A. Masters, USDA-ARS, University of Nebraska, Lincoln.
     
  10. The Aphthona Pilot Study.  N.E. Rees
     
  11. ...A USDA Plan to Assist in Field Insectary Establishment for Biological Control of Leafy Spurge.  R.D. Richard, USDA-APHIS-BBCF, Bozeman, MT.
     
  12. The Influence of Leafy Spurge Genetic Diversity on the Reproductive Success of Leafy Spurge Gall Midge (Spurgia esulae).  Martha L. Rowe, Scott J. Nissen, Donald J. Lee,Department of Agronomy; Robert A. Masters, USDA-ARS, University of Nebraska, Lincoln, NE; and Rodney G. Lym, Crop and Weed Science Department, North Dakota State University, Fargo, ND.
     
  13. A Microcage Method for Studying Aphthona spp. Flea Beetles in the Field.  C.M. Scholes, S.A. Clay, and P.S. Rieger, Plant Sciences Dept., South Dakota State University.
     
  14. Potential Biological Control Agents for Leafy Spurge Found in Southern France.  R. Sobhian.
     
  15. Insects for Leafy Spurge Control.  Neal R. Spencer, USDA/ARS in Sidney, Montana 59270.
     
  16. The Establishment, Increase, and Impact of Aphthona spp. (Chrysomelidae) on Their Host, Leafy Spurge (Euphorbia esula), in Fremont County, Wyoming.  Stephen Van Vleet; Fremont County Weed and Pest Dept., Lander, Wyoming 82520, (307) 332-1052.
     
  17. USDA-APHIS-PPQ Redistribution of Aphthona spp. Leafy Spurge Flea Beetles, 1988-1993.  H.W. Ziolkowski, R.D. Richard, and R.W. Hansen; USDA-APHIS-PPQ, Forestry Sciences Lab, Montana State Univ., Bozeman, MT 59717-0278.
     
CHEMICAL
  1. Herbicides and Grass Competition for Leafy Spurge Control.  Katheryn Christianson, Rodney G. Lym, and Calvin G. Messersmith; Research Specialist and Professors, respectively, Crop and Weed Sciences Department, North Dakota State University, Fargo, 58105.
     
  2. The Control of Leafy Spurge with Initial and Retreatments of Picloram.  Mark A. Ferrell, Department of Plant, Soil and Insect Sciences, University of Wyoming, P.O. Box 3354, Laramie, WY 82071-3354,307-766-5381.
     
  3. Evaluation of Season-Long Mechanical and Low Herbicide Input Treatments for Leafy Spurge Suppression.  C.M. Scholes and S.A. Clay, Plant Science Dept., South Dakota State University.
     
  4. Effect of Imazapyr, Glyphosate, and Naphthalene Acetic Acid (NAA) on Leafy Spurge Adventitious Shoot Bud Growth and Development.  W. Mack Thompson, Scott J. Nissen, and Robert A. Masters; USDA/ARS at the University of Nebraska-Lincoln.
     
ECOLOGY
  1. Revegetation of Leafy Spurge-Infested Rangeland With Native Tallgrasses.  Robert A. Masters, Scott J. Nissen, and Robert N. Stougaard; USDA-ARS; Department of Agronomy, University of Nebraska, Lincoln; Montana State University, Bozeman.
     
  2. Carbon Allocation of Leafy Spurge Following Defoliation.  Bret E. Olson and Roseann T. Wallander, Animal and Range Sciences Department, Montana State University, Bozeman, MT 59717.
     
GRAZING
  1. The Role of Livestock in Integrated Leafy Spurge Management.  John W. Walker, Scott L. Kronberg, Saud L. Al-Rowaily and Neil E. West
     
  2. Response of Leafy Spurge to Defoliation and Competition.  Saud L. Al-Rowaily, Neil E. West, and John W. Walker. Al-Rowaily and West are with the Department of Range Science, Utah State University, Logan, UT 84322-5230. Walker works at the USDA-ARS, US Sheep Experiment Station, Dubois, ID 83423.
     
  3. Potential Aversion-Inducing Compounds in Leafy Spurge  S.L. Kronberg1, W.C. Lynch2, and J.W. Walker3; 1Dept. of Animal & Range Sciences, South Dakota State University, Brookings, 57007, 2Dept. of Psychology, Montana State University, Bozeman, 59717, 3USDA-ARS, US Sheep Exp. Station, Dubois, ID 83423.
     
  4. Factors Affecting Leafy Spurge Preference by Livestock.  John W. Walker, Scott L. Kronberg, Saud L. Al-Rowaily and Neil E. West
     
  5. Recovery of Leafy Spurge Seed From Sheep Manure.  Roseann T. Wallander and Bret E. Olson; Animal and Range Sciences Department, Montana State University, Bozeman, MT 59717.
     
INTEGRATED PEST MANAGEMENT
  1. Process for Developing a Leafy Spurge Strategic Management Plan within Theodore Roosevelt National Park.  R.J. Andrascik, Resources Management Specialist, Medora, ND.
     
  2. Integration of Herbicides with Aphthona spp. Flea Beetles for Leafy Spurge Control. J James A. Kapaun, Rodney G. Lym, Robert B. Carlson, and Don A. Mundal; respectively, Research Technician and Professor, Crop and Weed Sciences Department and Professor and Research Specialist, Department of Entomology, North Dakota State University, Fargo 58105.
     
  3. Integration of Herbicides with Grazing for Leafy Spurge Control.  Rodney G. Lym, Donald R. Kirby, and Kevin K. Sedivec; Professor, Crop and Weed Sciences Department, and Professor and Rangeland Management Specialist, Animal and Range Sciences Department, North Dakota State University, Fargo, ND 58105.
     
  4. Herbicide and Fire Effects on Leafy Spurge Density and Seed Germination.  Gale L. Wolters, Carolyn Hull Sieg, Ardell J. Bjugstad, and F. Robert Gartner.
     
TECHNOLOGY
  1. Using Remote Sensing for Detecting and Mapping Leafy Spurge (Euphorbia esula). J.H. Everitt, G.L. Anderson, D.E. Escobar, M.R. Davis, N.R. Spencer, and R. J. Andrascik; Range Scientist, Ecologist, Remote Sensing Specialist, and Airplane Pilot, USDA, ARS, 2413 E. Highway 83, Weslaco, TX 78596, Entomologist, USDA, ARS, P.O. Box 1109, Sidney, MT 59270, and Resource Management Specialist, USDI, Theodore Roosevelt National Park, P.O. Box 7, Medora, ND 58645, respectively.
     
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