2015
Determination of Heterodera glycines types for improved soybean cyst nematode management in South Dakota
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Contributor/Checkoff:
South Dakota Soybean Research and Promotion Council
Category:
Sustainable Production
Keywords:
NematodePest
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Emmanuel Byamukama, South Dakota State University
Co-Principal Investigators:
Gregory Tylka, Iowa State University
Project Code:
Contributing Organization (Checkoff):
South Dakota Soybean Research and Promotion Council
(n/a)
Institution Funded:
South Dakota State University
(n/a)
Brief Project Summary:

Effective management of soybean cyst nematode depends on knowing the extent of its occurrence and Heterodera glycines (HG) types. HG type testing will be done on soil samples collected in the state. Extracted eggs and juveniles will be transferred to soybean differential lines. Several commercial soybean cultivars will be screened for SCN resistance in the greenhouse and the field to determine if the resistance genes of these cultivars can limit SCN populations in South Dakota. This project will also track SCN movement across counties and provide free SCN soil testing for farmers. The goal of this project is to continue activities to help farmers manage this major pest.

Key Benefactors:
farmers, agronomists, plant pathologists, extension specialists, ag retailers

Information And Results
Project Deliverables

This project will also track SCN movement across counties and provide free SCN soil testing for South Dakota soybean farmers. This is significant since in 2013 they tested 1,098 soil samples for SCN. The goal of this project is to continue activities helping farmers better manage this major pest of soybean.

Final Project Results

Update:

View uploaded report PDF file

In the FY2015--1,313 producer soil samples were analyzed for SCN and results and recommendations provided to the submitters. This number is slightly higher than last year submissions, indicating continued awareness of SCN in the state.

We have determined the Heterodera glycines types for 73 SCN populations collected from SD. Results indicate 25% of the SCN populations tested can reproduce on PI 88788, a common source of resistance used in SD. Of the HG types tested, 29% were HG type 0 (these populations had <10% female index on all SCN differential lines). The majority of SCN populations tested could only reproduce on a single PI line. These results indicate that use of resistance genes available in commercial cultivars is still viable, but should be combined with other management practices to avoid adapted SCN populations increasing.

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.