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The most damaging soybean pathogen is rapidly spreading American Phytopathological Society The soybean cyst nematode (SCN) is the most damaging pathogen of soybean in the United States and Canada and it is spreading rapidly, according to information compiled by Gregory Tylka and Christopher Marett, nematologists at Iowa State University. SCN was first found in the United States in 1954 and most recent estimates show that SCN results in $1.5 billion in annual yield losses. “The continuing spread of SCN is alarming, but not surprising,” said Tylka. “Anything that moves soil can move the nematode, including wind, water, and farm machinery.” In an article published in Plant Health Progress, Tylka and Marett report that SCN was found in 55 new counties in the United States and 24 new counties and rural municipalities in Canada between 2017 and 2020. Most dramatically, New York State, which saw SCN in only one county pre-2017, reported SCN in 29 new counties, and Manitoba repor

New yorkUnited statesGregory tylkaChristopher marettIowa state universityPlant health progressIowa stateNew york stateSoybean cyst nematodePlant healthபுதியது யார்க்ஒன்றுபட்டது மாநிலங்களில்ஐயுவா நிலை பல்கலைக்கழகம்ஆலை ஆரோக்கியம் ப்ரோக்ரெஸ்ஐயுவா நிலைபுதியது யார்க் நிலை