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Microscopic worms burrowing through cells, injecting foreign compounds through hypodermic-needle-like mouth parts, altering the basic biology of the cells being fed upon. Shape-shifting worms that grow so large that they rupture out of the tissues they are feeding upon. Sound like the plot for a science fiction movie? Believe it or not, this is the basic biology of a widespread, serious parasite of soybean - the soybean cyst nematode. WelcomeThis site is intended to provide easy access to the most critical facts about SCN, the soybean cyst nematode, and links to more in-depth information. We hope you find it useful.
Current News 2012 SCN-resistant soybean variety trial results are complete. Hundreds of SCN-resistant soybean varieties are evaluated in nine field experiments conducted throughout Iowa each year by the ISU SCN-resistant Soybean Variety Trial Program. Read More
Learn the latest about SCN at pesticide applicator training this fall/winter (2012/2013). The biology and management of SCN will be the topic of a presentation at this winter's private pesticide applicator training. Participants will hear a refresher about scouting fields for SCN, information about how drought conditions affect SCN reproduction and the yield loss it causes, and the latest on managing SCN with nonhost crops (corn), SCN-resistant soybean varieties, and new nematode protectant seed treatments. More information is available online here.
Latest Integrated Crop Management News articles on SCN:
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New webcast discusses increased SCN reproduction on PI 88788 SCN resistance. A new webcast explains the factors leading to the build up of SCN populations with elevated reproduction on PI 88788. 
2nd edition SCN Field Guide. The revised, second edition of the SCN Field Guide became available in early October 2012. New content includes discussion of the effects of drought conditions on SCN, increased, increased SCN reproduction on PI 88788 SCN resistance, and new nematode-protectant seed treatments as a management option. 
List of SCN-resistant soybean varieties for 2013. Each year, ISU personnel compile a list of SCN-resistant soybean varieties for Iowa soybean farmers. 
Soybean Cyst Nematode
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