2017
Control of Pigweed with an Integrated Systems Approach in Soybean.
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Contributor/Checkoff:
Kansas Soybean Commission
Category:
Sustainable Production
Keywords:
AgricultureCrop protectionHerbicide
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Anita Dille, Kansas State University
Co-Principal Investigators:
Marshall Hay, Kansas State University
Dallas Peterson, Kansas State University
Kraig Roozeboom, Kansas State University
Doug Shoup, Kansas State University
+3 More
Project Code:
1780
Contributing Organization (Checkoff):
Kansas Soybean Commission
$30,851
Institution Funded:
Kansas State University
$30,851
Brief Project Summary:

Pigweed emergence and growth coincides closely with soybean emergence, creating an immediate situation for crop and weed competition. Uncontrolled pigweed can produce an abundance of seed, greatly impacting weed control effectiveness for many years. And pigweed resistance ALS-inhibitor and glyphosate herbicides has developed. The objective of this project is to evaluate an integrated systems approach of using row-crop cultivation, reduced row width, cover crops, and glufosinate with residual herbicides to build a means for farmers to implement sustainable pigweed control.

Key Benefactors:
farmers, applicators, ag retailers, extension specialists

Information And Results
Final Project Results

Update:

View uploaded report Word file

View uploaded report 2 PDF file

The importance of narrow row spacing, cover crop, and a complete herbicide program were made obvious in the findings of this research. In the absence of both a herbicide and cover crop, substantial pigweed pressure was observed. Pigweed biomass suppression was observed in both the 15 inch and 7.5 inch rows, whereas maximum pigweed biomass was observed in 30 inch rows. In the absence of herbicide but with row-crop cultivation and a winter wheat cover crop, approximately 65 to 80% pigweed control was observed. This is one example of how integrated weed management strategies were exemplified in this research. Additionally, the addition of a cover crop demonstrated that pigweed biomass and density can be reduced by approximately 50%.

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.