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1990
Wednesday, December 19th

1990 Crop Production and Protection Conference

Crop Production and Protection Conference

Adding Crop Consulting Services to Your Business

Dean Grundman, Iowa State University

Agriculture: Environmental Problems and Directions

Ubbo Agena, Iowa Department of Natural Resources
Bill Bryant, Iowa Department of Natural Resources
Tom Oswald, Iowa Department of Natural Resources

Approaches to European Corn Borer Management

Marlin E. Rice, Iowa State University

Biological Pest Controls: Possibilities for Improved Implementation in Iowa

David B. Orr, Iowa State University

Biology and Management of Bean Leaf Beetle in Soybean

Larry P. Pedigo, Iowa State University
Michael R. Zeiss, Iowa State University
Marlin E. Rice, Iowa State University

Control of Corn Leaf Diseases

C. A. Martinson, Iowa State University

Demonstration of a Weed Management Expert System for Crop Production

Edward E. Schweizer, U.S. Department of Agriculture

Determining Herbicide Carryover Risk- How Close Can We Come?

Mark M. Loux, Ohio State University

Digitized Soil Maps for Iowa

Gerald A. Miller, Iowa State University
Robert C. Mortensen, Iowa State University

Effects of Previous Hybrid on Corn Yields the Following Year

I. C. Anderson, Iowa State University
D. N. Sundberg, Iowa State University

Environmental Opportunities and Responsibilities for the 90's

Craig I. Struve, C-S Agrow Service

Farmstead Well Assessment

Richard O. Pope, Iowa State University

Fertilizer Placement Consideration for Conservation Tillage

R. M. Cruse, Iowa State University

Grasshopper Management

Wendy K. Wintersteen, Iowa State University
Joseph A. Browde, Iowa State University
Marlin E. Rice, Iowa State University

Herbicide Presistence in Soil

Mark M. Loux, Ohio State University

Herbicide Resistance in Crops and Weeds

Michael D. K. Owen, Iowa State University

Immunoassays for Pesticide Detection

Robert G. Hartzler, Iowa State University

Long-Term Trends for Selected Iowa Weather Variables

Richard E. Carlson, Iowa State University

Making Corn Replant Decisions

Garren O. Benson, Iowa State University

Managing Alfalfa

Stephen K. Barnhart, Iowa State University

Minor Soil Pests

Marlin E. Rice, Iowa State University
Jim Oleson, Iowa State University
Wendy Wintersteen, Iowa State University

Pesticide Drift: A Problem in Iowa?

Charles A. Eckermann, Iowa Department of Agriculture and Land Stewardship

Potato Leafhoppers and Blister Beetle: Management of Traditional and Nontraditional Alfalfa Pests

Marlin E. Rice, Iowa State University

Rapid Diagnostic Kits for Plant Diseases

Paula Flynn, Iowa State University

Research on Nitrogen Indices in Wisconsin and the Midwest

Larry G. Bundy, University of Wisconsin

Results of Latest Water Quality Surveys

George F. Czapar, Iowa State University

Soybean Cyst Nematode- Biology Management

Gregory L. Tylka, Iowa State University

Soybean Cyst Nematode- Identification and Extraction Technique

Gregory L. Tylka, Iowa State University

Table of Contents

Crop Production and Protection Conference

The Potential Role of Cover Crops in Iowa Cropping Systems

Robert G. Hartzler, Iowa State University

Water and Risk Assessment

Vernon N. Houk, U.S. Department of Health and Human Services

Weed Aggressivity in Agronomic Crops

Edward E. Schweizer, U.S. Department of Agriculture

Woolly Cupgrass Biology and Management

Michael D. K. Owen, Iowa State University