2022
Virulent races of Phytophthora root rot in North Dakota
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Contributor/Checkoff:
North Dakota Soybean Council
Category:
Sustainable Production
Keywords:
Crop protectionDiseaseField management
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Berlin Nelson, North Dakota State University
Co-Principal Investigators:
Project Code:
QSSB
Contributing Organization (Checkoff):
North Dakota Soybean Council
$6,650
Institution Funded:
North Dakota State University
$6,650
Brief Project Summary:

Phytophthora root rot is a major disease generally associated with high soil moisture for extended periods. The pathogen is long-lived in soil and resistance is the most effective way to reduce damage during conditions favorable for disease. The pathogen consists of various races that can attack different genes in soybean for resistance. Understanding what races are found in soybean growing areas is essential information for selecting the resistance genes most effective to manage the disease. This project includes a statewide survey to determine the virulence phenotypes on a selection of varieties.

Key Benefactors:
farmers, pathologists, breeders

Information And Results
Project Deliverables

1. Identification of races of P. sojae in the principle soybean growing counties.
2. Identification of the most common races and which are most threatening to soybean cultivars in this area.

Final Project Results

Updated June 27, 2022:
VIRULENT RACES OF PHYTOPHTHORA ROOT ROT IN NORTH DAKOTA
FY 2022 Executive Summary for ND Soybean Council
June 30 2022
Principal Investigator: Dr. Jack Rasmussen, Professor and Head, Dept. Plant Pathology, NDSU

Objectives: Conduct a state-wide survey of the races of Phytophthora sojae and determine the virulence phenotypes on a selection of 8 differential varieties. The virulence phenotype is a list of resistance genes that an isolate of the pathogen can attack.

This grant was originally supposed to start on July 1, 2021, but NDSU was unable to fill the soybean pathologist faculty position following the retirement of Dr. Nelson on July 1 of 2021. Therefore, no research was conducted on this grant.



VIRULENT RACES OF PHYTOPHTHORA ROOT ROT IN NORTH DAKOTA
FY 2022 Executive Summary for ND Soybean Council
June 30 2022
Principal Investigator: Dr. Jack Rasmussen, Professor and Head, Dept. Plant Pathology, NDSU
Objectives: Conduct a state-wide survey of the races of Phytophthora sojae and determine the virulence phenotypes on a selection of 8 differential varieties. The virulence phenotype is a list of resistance genes that an isolate of the pathogen can attack.

This grant was originally supposed to start on July 1, 2021, but NDSU was unable to fill the soybean pathologist faculty position following the retirement of Dr. Nelson on July 1 of 2021. Therefore, no research was conducted on this grant.


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.