Scouting for Soybean Seed Diseases
Published: 11/07/2016
DOI: doi.org/10.31274/cpn-20190620-018
CPN-1001
Scouting for Common Soybean Seed Diseases
Healthy soybean seed (center) surrounded by seeds with various diseases
Seed Disease Management Strategies
Plant pathogen-free seed of resistant varieties in areas with a history of the disease.
Fungicide seed treatments may reduce seed to seedling transmission of fungal diseases; foliar fungicides may reduce seed infection by some fungi.
Tillage and crop rotation can reduce the amount of residue-born disease inoculum available to infect soybean.
Controlling bean leaf beetle, aphids, and other insect vectors will reduce virus infection and can reduce pod injury that could result in fungal infection.
Seedling diseases
Diaporthe seed decay in the field
Diaporthe seed decay signs and symptoms
Soybean seeds with sclerotia and symptoms of Sclerotinia stem rot
Sclerotinia stem rot cottony growth and sclerotia in pod
Symptoms of bean pod mottle virus on soybean seed
Symptoms of soybean mosaic virus on soybean seed
Soybean seed in pod showing symptoms of purple seed stain
Purple seed stain symptoms on soybean seeds
Downy mildew foliar symptoms
Downy mildew seed symptoms
Penicillium-infected seed
Fusarium-infected seed
Acknowledgments
Authors
Albert Tenuta, Ontario Ministry of Agriculture; Carl Bradley, University of Illinois; Martin Chilvers, Michigan State University; Loren Giesler, University of Nebraska-Lincoln; Febina Mathew, South Dakota State University; Daren Mueller, Iowa State University; Adam Sisson, Iowa State University; Damon Smith, University of Wisconsin; and Kiersten Wise, Purdue University.
Reviewers
Emmanuel Byamukama, South Dakota State University; Anne Dorrance, The Ohio State University; Doug Jardine, Kansas State University; Dean Malvick, University of Minnesota; Samuel Markell, North Dakota State University; and Laura Sweets, University of Missouri.
All photos were provided by and are the property of the authors except bean pod mottle and petri dishes with diseased seeds by Craig Grau, University of Wisconsin; downy mildew diseased seeds by X.B. Yang, Iowa State University; downy mildew leaf symptoms by Alison Robertson, Iowa State University, Penicillium and Fusarium diseased seedlings from Dennis McGee and Robert Nyvall, Iowa State University.
Sponsors
The Soybean Disease Management series is a multi-state collaboration sponsored by the North Central Soybean Research Program (NCSRP) through the Soybean Checkoff. This project was funded in part through Growing Forward 2 (GF2), a federal-provincial territorial initiative. The Agricultural Adaptation Council assists in the delivery of GF2 in Ontario. The authors thank the United States Department of Agriculture - National Institute of Food and Agriculture and the Grain Farmers of Ontario for their support. Contributors to this series come from land-grant universities in the North Central states and Canada.
This information is provided only as a guide, and the authors assume no liability for practices implemented based on this information.
This publication was developed by the Crop Protection Network, a multi-state and international collaboration of university/provincial extension specialists and public/ private professionals that provides unbiased, research-based information to farmers and agricultural personnel. This information in this publication is only a guide, and the authors assume no liability for practices implemented based on this information. Reference to products in this publication is not intended to be an endorsement to the exclusion of others that may be similar. Individuals using such products assume responsibility for their use in accordance with current directions of the manufacturer.
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