2022
Characterization of Soybean Cyst Nematode and Sudden Death Syndrome Occurrences in Virginia Soybean
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Contributor/Checkoff:
Virginia Soybean Board
Category:
Sustainable Production
Keywords:
NematodePest
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
David Langston, Virginia Tech
Co-Principal Investigators:
Project Code:
Contributing Organization (Checkoff):
Virginia Soybean Board
$18,000
Institution Funded:
Virginia Tech
$18,000
Brief Project Summary:
Plant-parasitic nematodes cause subtle to severe losses in Virginia soybeans. In some cases, nematodes predispose plants to other diseases and cause even more losses such as with sudden death syndrome. The combined effect of cultural practices, resistant varieties and seed treatments need to be investigated in Virginia to provide better field-specific recommendations in managing soybean cyst nematode, the most threatening nematode, and SDS. This project seeds to survey production practices and their effects on SCN and SDS, to characterize SCN races in fields known to be infested with these nematodes and to evaluate variety resistance, seed treatment alone and in combination for reducing losses to SCN and SDS in Virginia soybeans.
Key Beneficiaries:
#agronomists, #extension agents, #farmers
Unique Keywords:
#disease, #disease management, #integrated pest management, #nematodes, #scn, #sds, #soybean cyst nematode, #sudden death syndrome
Information And Results
Project Summary

Plant-parasitic nematodes (PPN) cause subtle to severe losses in Virginia soybeans. In some cases, PPN predispose plants to other diseases and cause even more losses such as with sudden death syndrome (SDS). A survey of nematode populations in soybean production areas of Virginia was conducted annually from 2016 to 2019. In this survey, soybean cyst nematode (SCN) has the greatest potential to suppress soybean yield and was identified in 14% (N=68) of 477 fields samples. In addition to crop rotation with a non-host, crop host resistance is one of the most effective and economical approaches to nematode management. The combined effect of cultural practices, resistant varieties and seed treatments need to be investigated in Virginia to provide better field-specific recommendations in managing both pathogens.

Project Objectives

1) Survey production practices and their effects on soybean cyst nematode (SCN) and sudden death syndrome (SDS).
2) Characterize soybean cyst nematode (SCN) races in fields known to be infested with these nematodes.
3) Evaluate variety resistance, seed treatment alone and in combination for reducing losses to SCN and SDS in Virginia soybeans.

Project Deliverables

Progress Of Work

Final Project Results

Benefit To Soybean Farmers

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.