Damage done by SCN often goes unrecognized until lower-than-expected yields are harvested. Above-ground symptoms may not be obvious, especially when adequate or excess rainfall occurs during the season.
Fall time is the best time of year to sample and test the soil for soybean cyst nematode in hopes of managing this silent killer of soybean yields, says South Dakota State University Extension.
Ohio State University Extension recommends sampling for SCN, checking disease-resistant scores on your varieties and using the appropriate seed treatment to get ahead of diseases this season.
Michigan State University Extension experts discuss the principle challenges and risks of planting second-year soybeans and provide some management recommendations for mitigating them.
Iowa State University Extension says a buildup of SCN numbers can go unrecognized because a soybean crop often doesn't appear stressed above ground, even though yield loss is occurring.
Although there are many SCN-resistant varieties available for soybean farmers, almost all contain resistance genes from a single soybean breeding line, says Iowa State University Extension's Greg Tylka.
Simply planting SCN varieties said to be resistant is no longer an effective solution to the problem, and areas with high levels of both SDS and SCN need to managed simultaneously, says Purdue University Extension.
If your yield monitor is indicating low-yielding areas for soybeans, soybean cyst nematodes could be the problem and South Dakota State University Extension discusses how to get to the root of the problem by testing your soil this fall.
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