2015
Management Solutions for Glyphosate-Resistant Pigweeds in Soybean Production Systems (Year 3 of 1320-732-7227)
Contributor/Checkoff:
Category:
Sustainable Production
Keywords:
(none assigned)
Lead Principal Investigator:
Jason Norsworthy, University of Arkansas Division of Agriculture
Co-Principal Investigators:
Daniel B Reynolds, Mississippi State University
Bill Johnson, Purdue University
Bryan Young, Southern Illinois University
Mark Loux, The Ohio State University
Kevin Bradley, University of Missouri
Reid Smeda, University of Missouri
Greg Kruger, University of Nebraska
Larry Steckel, University of Tennessee-Institute of Agriculture
Shawn Conley, University of Wisconsin
+8 More
Project Code:
1520-732-7227
Contributing Organization (Checkoff):
Brief Project Summary:

Unique Keywords:
#weed control, #weed control-herbicide resistance
Information And Results
Project Deliverables

• Describe Palmer amaranth and waterhemp emergence throughout the growing season and use this information to develop improved programs for controlling pigweed.
• Define the persistence of pigweeds in the soil seedbank across vast geographies and use this information to promote draw-down of the soil seedbank.
• Determine the impact of emergence date of Palmer amaranth and waterhemp from across differing geographies on pigweed seed production and use this information to understand the risk of escaped plants contributing to the soil seedbank and causing increases in resistance problems.
• Understand the likelihood of successfully capturing pigweeds during soybean harvest. This information is vital to the development of harvest weed seed control strategies which may include destruction of weed seed as it exits the combine.
• Determine the suitability and success of various tillage practices across vastly different regions of soybean production for aiding control of pigweeds.
• Determine the suitability and impact of cover crops across vastly different regions of soybean production for aiding control of pigweed.
• Determine the impact of soybean row spacing and seeding rate on aiding pigweed control across various production regions.
• Characterize the effectiveness of multiple modes of action programs that will be promoted for pigweed control in herbicide-tolerant soybean having stacked traits.
• Define the optimum “system” for each state or region in terms of weed control and economic returns through integration of strategies defined as successful in the earlier stages of this project.

Final Project Results

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.