Pest Alert: Soybean Rust
Click the following image to view a soybean rust scouting video: Soybean Rust: Scout Before You Spray.
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Download the IPM Center Soybean Rust Pest Alert (Adobe PDF, 232 kb)
Download the Hi-Resolution version of the IPM Center Soybean Rust Pest Alert (suitable for poster printing) (Adobe PDF, 5.8 MB)
Alerta Nacional de Plagas: La Roya de la Soya (PDF, 240 kb)
Soybean rust is a serious disease causing crop losses in other parts of the world. It has not yet been detected in the continental United States, but the fact that it is principally spread by wind-borne spores indicates it may eventually reach major soybean growing areas in this country. Soybean rust is caused by two fungal species, Phakopsora pachyrhizi, an aggressive pathogen, and Phakopsora meibomiae, a weak pathogen. P. pachyrhizi has spread in the past ten years to Zimbabwe, South Africa, Paraguay, and Brazil causing severe damage. Yield losses have been reported from 10-80%. APHIS listed P. pachyrhizi in the Federal Register on August 12, 2002, as one of nine agents or toxins potentially posing a severe threat to plant health or plant products in the U.S. The appearance of a new pathogen on a key U.S. commodity raises a whole series of questions. Farmers want to know if it poses a direct threat, not only for the crop in the year it appears, but also for the future. The arrival of P. pachrhizi to the United States soybean production areas is anticipated and could cause large crop and economic losses to growers. Resistant varieties are still in development, but there are effective fungicides being used in other countries. It is not currently known which of the fungicides, current registrations and future registration, may be effective on soybean rust in the U.S. Growers, Extension personnel, researchers, etc., also need to know how to identify soybean rust so rapid detection can occur.
Visit the USDA APHIS soybean rust page for more details.
Kuchler,F., Duffy, R.,Shrum, R., and Dowler, W. 1984. Potential economic consequences of the entry of an exotic fungal pest: The case of soybean rust. Phytopathology 74(8):916-920.
Yang, X. B., Dowler, W. M. and Royer, M. H. 1991. Assessing the risk and potential impact of an exotic plant disease. Plant Disease 75(10):976-982.
Yang, X. B., Tschanz, A. T., Dlowler, W. M. and Wang, T. C. 1991. Development of yield loss models in relation to reduction of components of soybean infected with Phakopsora pachyrhizi. Phytopathology 81:1420-1426.
Duffy, R. Control of exotic pests: Forecasting economic impacts. USDA/ERS Agricultural Economic Report #518. August 1984.
Strategic Plan to Minimize the Impact of the Introduction and Establishment of Soybean Rust (Phakopsora pachyrhizi, P. meibomiae) on Soybean Production in the United States. USDA/APHIS/PPQ. September 2002. This can be found at http://www.aphis.usda.gov/ppq/ep/pestdetection/soybean_rust/sbrplan1106.pdf
- Proceedings of the National Soybean Rust Symposium Plant Management Network International
- Asian Soybean Rust brochure from South Dakota State University
- Biweekly Soybean Rust News Releases from the University of Illinois
- Update on Pesticides Approved for Soybean Rust
- Soybean Rust: Issues and Facts (Use this link to download powerpoint files for the June 29, 2004 training teleconference)
- Illinois Soybean Rust Program (Adobe PDF)
- Asian Soybean Rust from University of Illinois Extension (Microsoft Powerpoint, 2.9 MB)
- Asian Soybean Rust: Scouting and Sampling in Illinois (Microsoft Powerpoint, 1.8 MB)
- Soybean Rust Page from the North Central Soybean Research Program
- Soybean Rust information for North Dakota, from the NDSU Extension
- Soybean Health Website (University of Wisconsin)
- Soybean Rust Action Plan (Michigan Department of Agriculture)
- Maryland Response and Action Plan for Soybean Rust (Adobe PDF)
- Soybean Rust Information Center (Plant Management Network Soybean Rust Steering Committee)
- Maps to Determine Aerobiological Risk for Soybean Rust Movement
- Wisconsin Extension Responds Website (includes streaming audio segment of a Wisconsin statewide teleconference)
- More Efficacy Studies from the National Pest Management Center
- Our website for the NC504 Soybean Rust Committee, as well as the NC504 page of the National Information Management and Support System
- Asian Soybean Rust (slide set courtesy of Iowa State University) (Micrsoft Word, 1.2 MB)
- Soybean Rust Fact Sheet from the University of Missouri
- Soybean Rust Action Plan from the Michigan Department of Agriculture (Adobe PDF, 188 kb)
- Florida Asian Soybean Rust Site
- DTN Soybean Rust Information Center
- Fungicides, Herbicides and Soybean Rust, Do They Mix? Purdue University (Adobe PDF)
- Select rust fungi on Fabaceae (legumes) from the United States Department of Agriculture
- Soybean Rust Information from the United States Department of Agriculture
- Soybean Rust Identification Brochure (Adobe PDF)
- Fungicide Information Ohio Agricultural Research and Development Center
- Crop Insurance Information from the United States Department of Agriculture
- National Soybean Rust Pest Alert (Adobe PDF)
- Economic Assessment of Soybean Rust
- Contact Your Local Extension Agent