Leafy Spurge Symposium
Bozeman, Montana; July 26-29, 1994
Abstracts by Subject:
Weeds Affect Us All? K.G. Beck, Associate Professor of Weed
Science, Colorado State University, Ft. Collins, Colorado
for the Regulation of Crown and Root Buds of Leafy Spurge.
Donald S. Galitz, NDSU, Fargo, ND
Spurge and the GPAC-14 Leafy Spurge Task Force: An Historical
Perspective. Barbra Mullin, Weed Specialis, Montana
Department of Agriculture, Helena, MT
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 of Leafy Spurge with the Use of Pathogens. Tony Caesar
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
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
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
Phenology of Leafy Spurge Biocontrol Agents.
Rich Hansen, USDA-APHIS, Forestry Sciences Lab, Montana State Univ.,
Bozeman, MT 59717-0278
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
Overview of Biological Control of Leafy Spurge in Alberta. Alec McClay, Alberta Environmental Centre, Bag 4000, Vegreville,
Alberta, Canada T9C lT4
Emergence Counts from Soil Samples and Laboratory Mating Crosses of
Aphthona lacertosa and Aphthona czwalinae. Donald Mundal
and Robert Carlson, North Dakota State University
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
Aphthona Pilot Study. N.E. Rees
USDA Plan to Assist in Field Insectary Establishment for Biological
Control of Leafy Spurge. R.D. Richard, USDA-APHIS-BBCF,
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
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
Potential Biological Control Agents for Leafy Spurge Found in
Southern France. R. Sobhian
Insects for Leafy Spurge Control.
Neal R. Spencer, USDA/ARS in Sidney, Montana 59270
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
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
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
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
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
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
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
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
The Role of Livestock in Integrated Leafy Spurge Management.
John W. Walker, Scott L. Kronberg, Saud L. Al-Rowaily and Neil E.
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
Potential Aversion-Inducing Compounds in Leafy Spurge S.L.
and J.W. Walker3;
1Dept. of Animal
& Range Sciences, South Dakota State University, Brookings, 57007,
Psychology, Montana State University, Bozeman, 59717,
3USDA-ARS, US Sheep Exp.
Station, Dubois, ID 83423
Factors Affecting Leafy Spurge Preference by Livestock. John W.
Walker, Scott L. Kronberg, Saud L. Al-Rowaily and Neil E. West
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
Process for Developing a Leafy Spurge Strategic Management Plan
within Theodore Roosevelt National Park. R.J. Andrascik,
Resources Management Specialist, Medora, ND
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,
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
Herbicide and Fire Effects on Leafy Spurge Density and Seed
Germination. Gale L. Wolters, Carolyn Hull Sieg, Ardell J.
Bjugstad, and F. Robert Gartner
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,