2022
Effect of Planting Green on Residual Herbicide Performance, Soil Health, and Management of Glyphosate-Resistant Palmer Amaranth in Soybean
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Contributor/Checkoff:
Nebraska Soybean Board
Category:
Sustainable Production
Keywords:
Field management Nutrient managementSoil healthTillageYield trials
Parent Project:
Effects of Planting Green on Residual Herbicide Performance, Soil Health, and Management of Glyphosate-Resistant Palmer Amaranth in Soybean
Lead Principal Investigator:
Amit Jhala, University of Nebraska at Lincoln
Co-Principal Investigators:
Project Code:
702
Contributing Organization (Checkoff):
Nebraska Soybean Board
$55,048
Institution Funded:
University of Nebraska at Lincoln
$55,048
Brief Project Summary:

Planting green refers to no-till planting of the primary crop into actively growing cover crop. Cereal rye is the most commonly planted cover crop in corn/soybean cropping systems in Nebraska. Use of pre emergence residual herbicide with multiple sites of action is one of the first recommendations for control of glyphosate-resistant Palmer amaranth. Additionally, to be effective, pre-emergence herbicide must be placed in contact with the soil and an even layer of the chemical is required to intercept germinating weed seeds. When pre-emergence herbicides are applied on standing cereal rye, it may affect the performance of the residual herbicides. Therefore, research is needed to determine...

Unique Keywords:
#crop management systems
Information And Results
Project Deliverables

- An Extension Field Day will be organized at the research site near Carleton, NE for on-site demonstration of research results to soybean growers, crop consultants, extension educators, and other interested stakeholders in July 2021 and 2022.
- Based on results of these projects, Crop Watch articles will be published on topics including ‘Interaction of planting green and residual herbicides for control of glyphosate-resistant Palmer amaranth ’and ‘Cereal rye and herbicide programs for control of resistant Palmer amaranth in soybean’ and a NebGuide article will be published and distributed to soybean growers.
- A number of oral presentations will be made to disseminate information from the results of this project to growers, extension educators, and other interested stakeholders during the Crop Production Clinics, Field Days and by writing extension articles in Nebraska Farmer.
- Time lapse video will be prepared to emphasize ‘Effect of cereal rye on Palmer amaranth emergence and management’. The video will be made available on YouTube.
- Two papers will be published in peer-reviewed journals.

Final Project Results

Updated May 25, 2023:

View uploaded report PDF file

Termination of cereal rye after 2 weeks of planting soybean suppressed weeds including Palmer amaranth and waterhemp better than terminating cereal rye 2 weeks before planting. This would be a good non-chemical tool to include in the toolbox for the effective management of herbicide-resistant weeds in soybean.

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.