Project Details:

Understanding How Fusarium Affects Soybean in ND and Development of Disease Management Strategies

Parent Project: This is the first year of this project.
Checkoff Organization:North Dakota Soybean Council
Categories:Soybean diseases
Organization Project Code:NDSC 2024 Agr 17
Project Year:2024
Lead Principal Investigator:Febina Mathew (North Dakota State University)
Co-Principal Investigators:

Contributing Organizations

Funding Institutions

Information and Results

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Project Summary

Diseases caused by Fusarium (seedling diseases, root rot and Sudden death syndrome) are yield limiting in the major U.S. soybean production regions. In North Dakota, sudden death syndrome (SDS), caused by F. virguliforme, was confirmed in 2020, and two other Fusarium, F. solani and F. tricinctum, have been implicated to cause root rot. The management tools available to soybean farmers are limited to the use of few seed treatments, and varieties with tolerance to only F. virguliforme. Currently, the distribution of the SDS fungus and other Fusarium species throughout ND is not well understood. However, SDS is appearing in pockets within few ND fields, and we hypothesize that there are several factors that have contributed to the emergence of this disease. As examples, soybeans may be used as a continuous crop in commercial fields because of market prices. Farmers may implement no-till or reduced tillage practices leaving crop debris infested with Fusarium near the soil surface which can infect soybean and rotational crops. Also, it is possible that SDS is showing up in fields where soybean cyst nematode (SCN) may be present. With SCN known to exist in North Dakota’s major soybean producing areas, there is a need to thoroughly understand F. virguliforme and other Fusarium in terms of their prevalence, pathogenicity, and how they interact with the nematode. The information obtained from this research will complement NDSU’s efforts to educate farmers on managing SCN, SDS and other Fusarium with currently available and new tools.

Project Objectives

• Characterize the species distribution of Fusarium associated with soybean.
• Characterize the pathogenicity of Fusarium species.
• Determine how the presence of SCN can affect development of SDS.
• Determine the impact of seed treatment on Fusarium.

Project Deliverables

• A map describing the current geographic distribution of F. virguliforme and other species of Fusarium in ND that will be made available to soybean farmers.
• Information on the potential for soybean crop damage caused by Fusarium
• Identification of soybean lines with root resistance for use in the breeding program to develop and release SDS resistant varieties.
• Information on how SCN impacts development of SDS, and why it is critical to manage the two diseases.
• Information on if the use of seed treatments can maximize soybean’s yield potential, i.e., the maximum yield that can be obtained when stress is absent.

Progress of Work

Final Project Results

Benefit to Soybean Farmers

Soybeans represent an economically important crop for ND farmers and Fusarium diseases (including SDS) can be yield-limiting particularly under cool, wet conditions (early in the season or during the growing season). Through this research, farmers will obtain information on how to minimize the impact of Fusarium and their association with SCN (such as use of SCN-resistant and SDS tolerant varieties, seed treatments) on soybean yield and maximize their return on investment.

Performance Metrics

We anticipate that at least 100 ND fields will be surveyed, and 10 to 25% may be positive for SDS. Considering there is limited information available on the root infection of soybean by F. virguliforme in breeding efforts across U.S., we anticipate identifying at least 5 resistant lines, which can help NDSU’s breeding program use these lines as parental materials to develop varieties with root infection resistance. In addition, we will be able to obtain information on if select species of Fusarium can cause disease on wheat and soybean. We anticipate demonstrating how SCN and the SDS fungus jointly can impact soybean growth, since research suggests that heavy SCN pressure can exacerbate SDS. This information will help focus our future work on refining the management recommendations currently available to the farmers to manage SCN and SDS.

Project Years