2020
Continued Survey and Characterization of Fungal Pathogens in Mid-Atlantic Soybean Production
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Contributor/Checkoff:
Delaware Soybean Board
Category:
Sustainable Production
Keywords:
Crop protectionDiseaseField management
Parent Project:
Survey and Baseline Fungicide Sensitivities of Fungal Pathogens in Mid-Atlantic Soybean Production
Lead Principal Investigator:
Alyssa Koehler, University of Delaware
Co-Principal Investigators:
Project Code:
Contributing Organization (Checkoff):
Delaware Soybean Board
$7,895
Institution Funded:
University of Delaware
$7,895
Brief Project Summary:

Correctly identifying soybean diseases is the first step in making sound management decisions to protect yield and quality. Many soil-borne pathogens can be present in a field, but they only attack when environmental conditions are favorable. While infection often takes place early in the season, symptoms don’t usually appear until soybeans enter reproductive growth stages. This survey characterizes the most common fungal pathogens in the Mid-Atlantic. It identifies threats and develops management recommendations for common disease pressure in soybeans. Understanding what is most likely to be in fields under various weather conditions allows soybean farmers to make better decisions to optimize yield and quality.

Key Benefactors:
farmers, agronomists, Extension agents

Information And Results
Project Deliverables

Final Project Results

Updated January 29, 2021:

View uploaded report PDF file

Soilborne pathogens can reduce soybean yield and quality. Limited research has been conducted in recent years to characterize and identify problematic fungal pathogens to species. Project objectives included: 1) Build a collection of isolates from Mid-Atlantic soybean fields with history of soilborne fungal disease. 2) Observe the frequency of isolation within and across farms and characterize fungal isolates to species using molecular protocols. 3) Share research findings through extension events and use findings to inform future management trials. In 2020, twenty-eight field sites were surveyed. Diaporthe longicolla was the dominant pathogen identified in 2020. From this trial, an isolate collection was established that will be used in greenhouse and field screening trials in 2021.

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.