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Leafy Spurge Symposium
Fargo, North Dakota; July 25-27, 1995

Abstracts by Subject:

BASIC

1. DNA Characterization of Aphthona spp. L.E. Wendel, D.C. Vacek and R. Ruiz; Mission Biological Control Center, Mission, TX

2. Relatedness of North American and European Leafy Spurge Based on DNA Markers. M.L. Rowe, S.J. Nissen, R.A. Masters, D.J. Lee and B.M. Bowditch

3. Cloning of gro (Growth Response) Genes Which Are Induced During Breaking of Quiescence in Root Buds of Leafy Spurge. David Horvath, USDA/ARS Biosciences Research Laboratory, Fargo, ND 58105-5674

4. Induced Frost Tolerance in Leafy Spurge Roots: Changes in Carbohydrate Metabolism. D. S. Frear and H. R. Swanson, USDA-ARS, Biosciences; Research Laboratory, Fargo, North Dakota 58105-5674

5. IAA Partially Counters the Effects of Root Formation Inhibitors in Leafy Spurge. David G. Davis1 and Kristi A. Breiland2 1USDA/ARS Biosciences Research Laboratory, Fargo, ND 58105-5674;2Plant Science Department, North Dakota State University, Fargo, ND 58105.

BIOLOGICAL CONTROL

1. PPQ Insectary Sites in North Dakota. Keith Winks, USDA-APHIS-PPQ, PO Box 2157, Bismarck, North Dakota 58502

2. USDA, APHIS Field Insectary Establishment and Redistribution of Leafy Spurge Biological Control Agents - How It Is Working on a National Scale. R. D. Richard, USDA-APHIS-PPQ, Bozeman Biocontrol Station, Bozeman, MT

3. Chamaesphecia hungarica - Current Status of Quarantine Clearance and Field Establishment. P. E. Parker1, R. W. Hansen2 and J. A. Goolsby1, USDA-APHIS-PPQ, 1Mission Biological Control, Center, Mission, TX; 2Bozeman Biological Control Facility, Bozeman, MT

4. Systems Approach with Biological Agents for Leafy Spurge Control. Jeff A. Nelson, Rodney G. Lym and Calvin G. Messersmith, Graduate Research Assistant and Professors, Department of Plant Sciences, North Dakota State University, Fargo 58105

5. Simple Techniques for Distributing Aphthona Flea Beetles from Established Field Insectary Sites. Rich Hansen, USDA-APHIS-PPQ, Forestry Sciences Lab, Montana State University, Bozeman, MT 59717-0278

CHEMICAL

1. Esters of Quinclorac as Possible Leafy Spurge Herbicides: Absorption, Translocation, Metabolism, and Toxicity. Gerald L. Lamoureux and Donald G. Rusness, USDA, Agricultural Research Service, Biosciences Research Laboratory, P.O. Box 5674, State University Station, Fargo, ND 58105

ECOLOGY

1. Enhancing the Competitiveness of Other Species with Leafy Spurge. Roseann T. Wallander and Bret E. Olson, Animal and Range Sciences Dept., Montana State University-Bozeman, Bozeman, MT 59717

2. Preliminary Assessment of Effect of Prescribed Fire upon Establishment of Aphthona nigriscutis in Leafy Spurge. David P. Fellows and Wesley E. Newton, National Biological Service, Northern Prairie Science Center, 8711 37th St. SE, Jamestown, ND 58401

3. Herbicides and Grass Competition for Leafy Spurge Control in North Dakota - 1995. Katheryn Christianson, Rodney G. Lym and Calvin G. Messersmith, Research Specialist, and Professors, Plant Sciences Department, North Dakota State University, Fargo, 58105

ECONOMICS

1. Economic Impact of Leafy Spurge on Alternative, Post-Conservation Reserve Program Land Uses. Hirsch, Steven, M.S., Department of Agricultural Economics, College of Agriculture, North Dakota State University, Fargo, ND 58105

GRAZING

1. Intensive Grazing of Angora Goats on Leafy Spurge Infested Rangeland. Kevin K. Sedivec, William T. Barker and Chad W. Prosser; Department of Animal and Range Sciences, North Dakota State University, Fargo, ND 58105

2. Defoliation Effects of Leafy Spurge on Sheep Rumen Microorganisms. Roberts, J.L. and B.E. Olson, Department of Animal and Range Sciences, Montana State University-Bozeman, Bozeman, MT 59717

3. Multi-species Grazing Using Goats and Cattle to Control Leafy Spurge. Chad W. Prosser, Kevin K. Sedivec and William T. Barker, Department of Animal and Range Sciences, North Dakota State University, Fargo, ND 58105

INTEGRATED PEST MANAGEMENT

1. Effect of Leafy Spurge Biotype and Herbicide Application on Aphthona spp. Establishment. Rodney G. Lym, Robert B. Carlson and Don A. Mundal, Professor, Plant Sciences Department, Professor and Research Specialist, Department of Entomology, North Dakota State University, Fargo 58105

2. Leafy Spurge (Euphorbia esula) Management by Combining Sheep Grazing with Fall-applied Herbicides. K.G. Beck and J.R. Sebastian, Dept. of Plant Pathology and Weed Science, Colorado State University

TECHNOLOGY

1. Biological Control of Leafy Spurge in Manitoba - Progress to Date and Prospects for the Future. Carla L. Allen, Weed Specialist, Manitoba Agriculture

2. Image Analysis to Determine Vegetative Cover of Leafy Spurge. J.L. Birdsall1&3, P.C. Quimby, Jr.1, T. Svejcar2 and B. Sowell3; 1USDA-ARS Rangeland Weeds Lab., MSU, Bozeman, MT 59717; 2USDA-ARS Eastern Oregon Ag. Res. Ctr., Burns, OR 97720; 3Dept. Animal & Range Natl. Res., MSU, Bozeman, MT 59717
 

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