2014
Employing fall and spring herbicide treatments to combat glyphosate resistant kochia in Central North Dakota in soybeans
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Contributor/Checkoff:
North Dakota Soybean Council
Category:
Sustainable Production
Keywords:
GeneticsGenomics
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Michael Ostlie, North Dakota State University
Co-Principal Investigators:
Project Code:
Contributing Organization (Checkoff):
North Dakota Soybean Council
(n/a)
Institution Funded:
North Dakota State University
(n/a)
Brief Project Summary:

A study was established in the fall of 2013 at the Carrington Research Extension Center to evaluate different pre-emergent herbicide application timings to soybeans. The goal was to determine if fall applications of multiple products were as effective as spring pre-emerge applications prior to soybeans in the absence of glyphosate. With glyphosate resistant Kochia becoming a serious problem in soybeans, evaluating each products contribution, without glyphosate, is critical.

Unique Keywords:
#breeding & genetics, #glyphosate resistant kochia, #herbicide, #soil applied herbicide
Information And Results
Final Project Results

Applying a herbicide in the fall can be tricky due to weather and harvest conflicts (compared to weather and planting conflicts for a spring preemergent program).

In this study, Fierce, Spartan, and Valor provided equal or better control when they were applied in the fall, compared to spring. However, other products did a great job of managing very small Kochia, and many products had good control on larger Kochia (still <1").

With the correct product and pre-emergent application timing, followed by good timing and product selection with a postemerged application, even large populations of glyphosate-resistant +Kochia can be managed.

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.