2019
Evaluation of Available Resistance in Soybean to Southern Root-knot Nematode
Home
Contributor/Checkoff:
South Carolina Soybean Board
Category:
Sustainable Production
Keywords:
Biotic stressCrop protectionField management Pest
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
John Mueller, Clemson University
Co-Principal Investigators:
Jonathan Croft, Clemson University
Project Code:
Contributing Organization (Checkoff):
South Carolina Soybean Board
$4,963
Institution Funded:
Clemson University
$4,963
Brief Project Summary:

Growers have been experiencing extreme damage and plant death due to root-knot nematode even when growing soybean varieties reported to be resistant. Repeatedly growing resistant soybeans may have selected for new races or even species of root-knot nematode. This project aims to identify the cause of increased yield losses on Southern root-knot resistant soybeans. It uses test sites to develop model nematode management schemes for typical farms. This includes use of total farm nematode surveys and the resistance status of varieties tested at each location. The work then provides growers with visual evidence of the problem and improved management practices.

Key Benefactors:
farmers, agronomists, extension agents

Information And Results
Project Deliverables

Reports will be submitted to the Soybean Board as requested on a quarterly basis (April 30, 2019; July 31, 2019; October 31, 2019; and January 31, 2020). Growers will be able to view both sets of field plots at field days in September. Results from the test will be distributed to growers and agents in January in the form of fact sheets or a newsletter. Results will also be presented at county production meetings.

Final Project Results

Updated March 19, 2020:

View uploaded report Word file

The next steps of this project will be to alert growers of the potential presence of Southern root-knot nematode in extremely high population densities and that current levels of resistance will not control Southern root-knot nematode at these levels. We will also inform growers that current seed treatments are not effective against such high levels of Southern root-knot nematode.

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.