Pioneer Agronomy Sciences Department

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Agronomy Sciences Directory

Department Manager


Rick Radliff
Senior Agronomy Sciences Manager

Johnston, Iowa

Special Expertise and Research:

  • Corn and soybean production practices
  • Weed management systems, weed/crop competition
  • Crop physiology
  • Training/Education techniques
  • Herbicide resistance

Agronomy Research

Paul Carter, Ph.D.
Senior Agronomy Sciences Manager

Johnston, Iowa

Special Expertise and Research:

  • Crop and tillage systems
  • Planting date, plant population and row spacing effects
  • Frost and wind damage effects on corn growth and yield
  • Corn silage management

Biography:
Paul earned his B.S. degree at North Dakota State University and his M.S. and Ph.D. degrees from the University of Minnesota and was Extension Agronomist and Professor at the University of Wisconsin-Madison before joining DuPont Pioneer. His research experience includes impacts of frost and wind damage on crop recovery, seeding practices, crop rotations, and tillage systems. Paul is a Fellow in both the American Society of Agronomy and the Crop Science Society of America and received the Agronomic Industry Award from the American Society of Agronomy.


Mark Jeschke, Ph.D.
Agronomy Research Manager

Johnston, Iowa

Special Expertise:

  • Corn and soybean production practices
  • Weed management systems, weed/crop competition
  • Field, greenhouse and lab research
  • Agronomic information delivery

Research:

  • Seed-related technologies (on-farm evaluations)
  • Foliar fungicides and other management inputs and practices

Biography:
Mark earned his B.S. and M.S. degrees in Crop Sciences at the University of Illinois at Urbana-Champaign. Mark joined Pioneer in 2007 and currently serves as Agronomy Information Manager. His primary role is development and delivery of useful and timely agronomy information based on DuPont Pioneer and university agronomy research. Mark authors and edits many of the agronomy resources available in the DuPont Pioneer agronomy library and through the Pioneer® GrowingPoint® agronomy app. Mark also manages the product and agronomy field demonstration plots at the Johnston campus.

Mark is originally from northern Illinois and is actively involved in the family corn and soybean farm near Rock City, Ill.


Dan Poston, Ph.D.
Agronomy Research Manager

Owens Cross Roads, Ala.

Special Expertise:

  • Crop physiology
  • Soybean management
  • Weed control
  • Soybean pests

Biography:
Dan holds a B.S. and M.S. from Clemson University and a Ph.D. from Virginia Tech. Dr. Poston grew up in the coastal plains of South Carolina. Most of his professional career has been spent as a soybean agronomist and weed scientist with Mississippi State University at the Delta Research and Extension Center in Stoneville, Miss. Dr. Poston coordinated soybean production and weed control research and assisted with regional and statewide Extension programming.

Dr. Poston joined DuPont Pioneer in 2008 as an Area Agronomist and transitioned to the Agronomy Research Manager role in 2010 supporting 13 southeastern states and now portions of Texas, Oklahoma and New Mexico as well.

In the Agronomy Research Manager role, Dr. Poston coordinates agronomy research projects that generate information to support the DuPont Pioneer product line and customer information needs. Agronomy research projects employ on-farm trials conducted by Pioneer Agronomists as well as collaborative efforts with Land Grant Universities and other third Party Contractors. Dr. Poston is especially passionate about high-yield soybean production and the factors that drive high yields.


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