Proceedings: 20th Anniversary Leafy Spurge Symposium Medora, ND, June 29, 1999 Foreword Symposium Archive Index Abstracts by Subject:

BASIC

1. THE RESPONSE OF GLUTATHIONE REDUCTASE AND GLUTATHIONE-S-TRANSFERASE TO ENVIRONMENTALLY- AND CHEMICALLY-INDUCED STRESS; AMELIORATION BY POLYAMINES IN LEAFY SPURGE (EUPHORBIA ESULA L.).  David G. Davis, Harley R. Swanson, Kristi A. Biewer, Donald R. Rusness, and James V. Anderson, Plant Physiologist, Plant Physiologist, Biological Science Laboratory Technician, Chemist, and Research Chemist, United States Department of Agriculture-Agricultural Research Service, Plant Science Research, Biosciences Research Laboratory, 1605 Albrecht Boulevard, Fargo, ND 58105-5674 USA.
    
2. AFLP ANALYSIS ON INDIVIDUALS FROM LEAFY SPURGE POPULATIONS CHARACTERIZED AS RESISTANT OR SUSCEPTIBLE TO FLEA BEATLE BIO-CONTROL AGENTS.  David P. Horvath, Research Plant Physiologist, USDA-ARS, Biosciences Research Laboratory, State University Station, Fargo, ND 58105-5674
    

3. APHTHONA FLEA BEETLE ESTABLISHMENT DETERMINED BY SOIL COMPOSITION AND ROOT GROWTH PATTERN. Donald A. Mundal and Robert B. Carlson, Research Specialist and Professor, Department of Entomology, North Dakota State University, Fargo, ND 58105.
    
4. INTEGRATION OF THE FLEA BEETLE, APHTHONA NIGRISCUTIS FOUDRAS, AND HERBICIDES FOR CONTROL OF LEAFY SPURGE, EUPHORBIA ESULA L.  Jeff A. Nelson, Rodney G. Lym, and Robert Carlson, Graduate Student and Professors, North Dakota State University, Fargo, ND 58105.
    
5. "KNOW THINE ENEMY" - UNDERSTANDING WEED MANAGEMENT THROUGH BIOLOGICAL RESEARCH.  James V. Anderson, David G. Davis, Michael E. Foley, and David P. Horvath, Research Chemist, Plant Physiologist, Research Leader, and Plant Physiologist, United States Department of Agriculture-Agricultural Research Service, Plant Science Research, Biosciences Research Laboratory, 1605 Albrecht Boulevard, Fargo, ND  58105-5674 USA.
    
6. SEX RATIO EFFECTS ON FECUNDITY AND FERTILITY OF A LEAFY SPURGE FLEA BEETLE APHTHONA LACERTOSA.  Denise L. Olson and Donald A. Mundal, Assistant Professor and Research Specialist, Department of Entomology, North Dakota State University, Fargo,  ND 58105.
    

7. IMAZAPIC FOR LEAFY SPURGE CONTROL.  Denise M. Markle and Rodney G. Lym Graduate Student and Professor, Department of Plant Sciences, North Dakota State University, Fargo, ND 58105.
    
8. PLATEAU (IMAZAPIC) FOR LEAFY SPURGE CONTROL IN WYOMING.  Mark A. Ferrell and Tom D. Whitson, Extension Educator and Professor, University of Wyoming, P.O. Box 3354, Laramie, WY 82071-3354.
    

9. SITE CHARACTERISTICS OF ESTABLISHED FLEA BEETLE COLONIES IN WESTERN NORTH DAKOTA.  Don Kirby, Mark Hayek, Dean Cline, Kelly Krabbenhoft, and Connie O'Brien, Professor, Research Assistant, Graduate Student and Research Specialist, Department of Animal and Range Sciences, North Dakota State University, Fargo, ND 58105 and USDA-APHIS, Dickinson, ND 58601.
    
10. EFFECTS OF PRESCRIBED BURNING AND HERBICIDE TREATMENTS ON LEAFY SPURGE (EUPHORBIA ESULA).  C.W. Prosser¹, K.K. Sedivec², and W.T. Barker². ¹USDA, Agricultural Research Service, Northern Plains Soil and Water Research Laboratory, 1500 North Central, Sidney, MT  59270. ²Animal and Range Sciences Department, North Dakota State University, Fargo, ND 58105
     
11. IMPACTS OF LEAFY SPURGE ON LOCAL AND LANDSCAPE PATTERNS OF PLANT SPECIES DIVERSITY IN THEODORE ROOSEVELT NATIONAL PARK.  Dan R. Cogan and Jack L. Butler, Environmental Scientist, ACS Government Solutions Group, Remote Sensing and GIS, Denver Federal Building, Bldg. 56, Denver, CO 80225 and Research Ecologist, USDA Forest Service, Rocky Mountain Research Station, Rapid City, SD 57702
     
12. SEEDBANK STUDY OF A LEAFY SPURGE INFESTATION.  John J. Sterling, Donald R. Kirby and Rodney G. Lym, Graduate Research Assistant and Professor, Department of Animal and Range Science, and Professor, Department of Plant Sciences, North Dakota State University, Fargo, ND 58105.
     

13. ECONOMIC ANALYSIS OF SHEEP GRAZING OF LEAFY SPURGE:  PRELIMINARY RESULTS.  Dean A. Bangsund¹, Dan Nudell², Randall S. Sell¹, F. Larry Leistritz¹, and Timothy C. Faller², Research Scientist, Research Specialist, Research Scientist, Professor, and Superintendent, ¹Department of Agricultural Economics, North Dakota State University, Fargo, 58105 and ²Hettinger Research Experiment Center, Hettinger, ND 58639.
     
14. PERCEPTIONS OF LEAFY SPURGE BY RANCH OPERATORS AND LOCAL DECISION MAKERS: AN UPDATE.   Randall S. Sell, Dean A. Bangsund, and F. Larry Leistritz, Research Scientist, Research Scientist, and Professor, Department of Agricultural Economics, North Dakota State University, Fargo, ND  58105-5636.
     

15. COMPARISON OF COMPANION GRAZING AND SINGLE SPECIES GRAZING ON LEAFY SPURGE INFESTED RANGELAND.  Jack D. Dahl, Timothy C. Faller, Kevin K. Sedivec, Jerrold Dodd, James Karn, and Don Stecher,  Agricultural Research Technician and Director, Hettinger Research Extension Center, Hettinger, ND 58639; Extension Rangeland Specialist and Chairman, Department of Animal and Range Sciences, North Dakota State University, Fargo, ND 58105; Northern Great Plains Agricultural Research Center, Mandan, ND 58554.
     
16. LEAFY SPURGE MANAGEMENT WITH SHEEP AND FLEA BEETLES.  K. George Beck and Larry R. Rittenhouse, Associate Professor and Professor, Dept. of Bioag Sciences and Pest Management, and Dept. of Rangeland Ecosystem Science, Colorado State University, Ft. Collins, CO 80523.
     
17. REMOVING THE CONSTRAINTS OF SHEEP AS AN ALTERNATIVE INTEGRATED PEST MANAGEMENT TOOL.  Timothy C. Faller and Jack D. Dahl, Director, Hettinger Research Extension Center, Hettinger, ND 58639 and Agricultural Research Technician, Hettinger Research Extension Center, Hettinger, ND 58639.
     
18. PROGRESS UPDATE ON TOXIC COMPOUNDS IN LEAFY SPURGE FOR RUMINANTS. Fathi T. Halaweish and Scott L. Kronberg, Assistant Professor, Department of Chemistry and Associate Professor, Department of Animal and Range Sciences, South Dakota State University, Brookings, SD 57007.
     

19. CHANGE DETECTION OF LEAFY SPURGE (EUPHORBIA ESULA) INFESTATIONS USING AERIAL PHOTOGRAPHY AND GEOGRAPHIC INFORMATION SYSTEMS.  G.L. Anderson¹, C.W. Prosser¹, S. Hagar², and B. Foster², ¹USDA, ARS, Northern Plains Agricultural Research Laboratory, 1500 N. Central, Sidney, MT 59270 and ²USDI, Theodore Roosevelt National Park, P.O. Box 7, Medora, ND 58645.